Jun, 2023

How to Identify Hydraulic Fittings

How to Identify Hydraulic Fittings ?

Hydraulic fittings are a crucial component in many industries, including manufacturing, construction, aviation, and many other areas where hydraulic systems are used. And since there are numerous classifications of hydraulic fittings and differences in application environments, you need to have basic fitting information to be able to accurately distinguish fittings. Here are some key steps that will help you identify hydraulic fittings more accurately:

Content

● Identify the Type of Fitting

● Identify Thread Types

● Measuring Dimensions

● Conclusion

● Other articles

Identify the Type of Fittings

You can simply determine the type of hydraulic fitting by the appearance of the fitting. Common hydraulic fittings can be broadly classified into the following categories:

Hose Fittings

Hose fittings are used to connect with hydraulic hoses. They have a hose port on one end, which can be inserted into a hose and used in a hydraulic system. The other end is a threaded end, either male or female, and is used with other fittings or components. Hose fittings are available with bends from 15 degrees to 180 degrees included and can be used in a variety of applications.

Adapters

Hydraulic adapters are the most common type of fitting. Each port of those fittings is threaded end and there exists a variety of different threads. Adapters include many types of hydraulic fittings: like tees, crosses, plugs, caps, bulkheads, grease nipples, etc. The different adapters have their own specific appearance and are very easy to distinguish.

Compression Fittings

There are three parts to a compression fitting: the nut, the ferrule, and the fitting. Commonly, there is a one-piece ferrule fitting and a two-piece ferrule fitting, which means that one or two ferrules are present in the fitting. These fittings can be used in tight places and do not require additional tools for installation.

Permanent or Reusable Fittings

Permanent hydraulic fittings, also known as one-piece fittings, are crimped fittings that are one piece. They are easy to install and operate and are the most popular type of fitting.

Reusable fittings have removable sleeves. They can be installed with a sleeve to hold the hose in place without causing displacement. Reusable hydraulic fittings are commonly used in applications that require field disassembly, saving most of the operating time.

Quick Connects

Quick disconnect fittings are divided into two parts, the plug and the coupler, which are mounted together with a single push. Quick disconnects increase user productivity by minimizing the time spent establishing and disconnecting fluid connections.

Identify Thread Types

Threads are generally present in hydraulic fittings, and threads are all available at different standards. Common thread standards include American Standard Thread, British Standard, and International Metric Thread System.

American Standard Thread

American Standard threads have two notch marks on the outside of the fitting and a “U” on the thread cap. There are many types of threads involved in the American Standard thread, including JIC, NPT, and ORFS threads.

JIC fittings are straight threads with a 37-degree flare cone on both the internal and external thread cones. NPT fittings are tapered threads with a 30-degree chamfered internal flare, NPTF fittings are upgraded versions of NPT for better sealing. And ORFS fittings are straight threads with a groove on the top of the fitting to allow for the installation of an O-ring.

British Standard Threads

BSP fittings are marked with a notch on the surface and a “G” on the thread cap. BSPP threads are straight threads with a 60-degree chamfer on the male thread and a 60-degree taper on the female thread (swivel fitting). They can be sealed with a sealant or gasket.

BSPT fittings have a tapered thread, which can be easily confused with NPT. However, BSPT fittings do not have any chamfers, while NPT fittings have a 60-degree chamfer.

Metric Standard Threads

Metric threads are abbreviated as “M” and they are one of the most common threads used in hydraulic fittings. Globally, there are three standard metric fittings: DIN metric, JIS metric, and Komastu metric fittings. DIN metric fittings often have 24°, 45°, and 30° tapers. Some common fittings also require the help of O-rings or other seals.

Metric, BSP, and American fittings also differ in thread shape (the angle between adjacent threads), with American and metric fittings having a 60° thread shape and metric threads having a 55° thread shape.

Measuring Dimensions

Once you have identified the type of fitting, then you need to determine the size of the fitting. Vernier calipers and pitch gauges are used to measure the size of the fitting. Vernier calipers can be used to measure the length, I.D., and O.D. of the fittings. The pitch gauge is used to determine the pitch of the adapter. These data can be measured to correspond to the supplier’s data, and then the corresponding joint can be selected.

Note: Do not use these steps to determine the internal threads. If you want to determine the female threaded fitting, you can first distinguish the male threaded fitting and then go directly to the corresponding female thread.

The measured data may be in error with the standard data. However, the measured diameter should not be larger than the standard data.

Conclusion

It is not difficult to distinguish hydraulic fittings, but it is necessary to be careful and distinguish all the details of the fittings. If you really can’t tell the type of hydraulic fittings, please take a detailed picture or video and contact us, Topa can give you a comprehensive answer!

How to Seal Hydraulic Fittings

How to Seal Hydraulic Fittings?

It is critical for hydraulic systems and for operators to seal hydraulic fittings properly. This is because if a fitting is incorrectly sealed, it may cause damage to the fitting, system failure, and even injury to personnel.

Introduction

Hydraulic systems are an integral part of all types of industrial machinery and hydraulic equipment. They can only function properly if they are properly sealed. Proper sealing ensures that hydraulic fluid remains in the system, maintains system pressure, and prevents failures or leaks from occurring. Moreover, proper sealing is what prevents external contamination from affecting the operation of the hydraulic system.

To properly install hydraulic fittings, you need to understand how to seal hydraulic fittings.

Why fittings leak

Typically, hydraulic fittings leak due to incorrect installation, excessive pressure, thread damage, vibration, material incompatibility, and seal damage. All of these reasons may lead to leaking fittings, then cause damage to the hydraulic system and have an impact on your machinery, time, and economy. In this article, Topa will focus on how fittings are sealed and how to seal them to prevent leaks properly, please continue to read!

Sealing Methods

Although the specific structure of the various sealing forms is different, the sealing principle is that the metal surface or seals (such as O-rings, ED seals, gaskets, combination gaskets, etc.) and the metal surface between the seals are squeezed to form a sealing surface to stop the hydraulic oil from spilling.

Flat Face Seal

Flat face seals are classified as E-type port end seals, A-type port end seals, and O-ring face seals.

E-type port end seal

The E-type port end sea is a metric fine thread with an annular groove structure. The metric fine threads have good self-locking properties and are highly resistant to vibration and loosening. The groove structure requires the installation of packing seals, which can be made of fluoroelastomer or nitrile rubber. This method ensures that the straight threaded fitting forms a seal and reduces the risk of leakage.

A-type port end seal

Type A port end seal has a metric fine thread or a British standard pipe taper(BSPT)thread on the male end and requires a gasket or a combination gasket. The BSPT threads are tapered, similar to NPT threads, but they have different pitches, so there is a slight difference in the sealing method.

O-ring face seal

The O-ring face seal(ORFS)has a groove at the top of the fitting thread end that allows the O-ring to be installed. When the fittings are tightened, the O-ring and the top of the other fitting will fit together tightly to form a seal and prevent leakage.

Tapered Face Seals

Tapered seals are divided into flare-type seals, 24° tapered seals, 30° tapered seals, and compression seals.

24° internal chamfer	DIN/Metric
30° internal chamfer	BSPP	NPTF/NPSM
30° external flare	Komastu	JIS
37° external flare	JIC	Metric/GB
45° external flare	SAE 45°	AN 45°
Flat	ORFS/ORB	Metric	BSPT

Hydraulic fitting chart

Flared face seal

Flare face is also called chamfer or flare. The raised tapered face of the male thread is the flare seat, and the recessed face of the female thread is the inverted flare. When female and male threads are used together, the contact surfaces of the two will fit tightly, creating a hard metal-to-metal seal. Hydraulic fittings commonly have 37° tapered cone faces and 45° tapered faces, and the internal and external threads of these fittings can be installed to form a flared face seal.

24° tapered seal

The 24° taper seal is a composite seal. It is a combination of a metal-to-metal hard seal and a metal face with an O-ring elastic seal. The fitting end is a metric fine thread with a 24° flare (seal bevel angle). This sealing structure is the German standard and is suitable for components with strict requirements for pressure-resistance capacity and sealing capability. This tarped seal can withstand different levels of pressure. Depending on the pressure-resistance capacity, these fittings are classified as light or heavy-duty.

30° cone seal

The 30° tapered seal has a metric fine thread or British pipe thread with a groove on the male end and a metric fine thread with a 30° taper on the female end, which requires an O-ring. This sealing structure is mostly used for the connection between the valve body and connector, and the hydraulic system pressure measuring port.

Compression seal

The external thread of the compression seal is a 24° female taper and the internal thread is also a 24° male taper, and the two are clamped to each other by means of a ferrule. There are also one-piece and two-piece ferrule fittings, with one and two ferrules respectively. This structure is the same as the 24° cone (compound seal) internal cone, and the two internal cone fittings can be used interchangeably.

Other Sealing Methods

Teflon Tape

Teflon tape is made of Polytetrafluoroethylene film and is commonly white. This tape is wrapped clockwise around the male threads of the fitting and then installed together with the female threads. However, Teflon tape is only suitable for some hydraulic systems. If Teflon tape is used in the wrong place, there is hard to form a seal and may even cause pieces of tape to contaminate the hydraulic fluid.

Thread Sealants

Liquid sealants can be applied to the metal surface of the fitting to fill in scratches. And defects on the fitting surface, preventing displacement and leakage. Thread sealants can be used on all-metal fittings to improve the sealability of the fitting.

Sealants are not normally supplied with metal fittings, except for DOT air brake fittings, so you should ask the manufacturer in advance before using a sealant.

How to Seal Hydraulic Fittings

All fittings only need to be installed correctly following the steps to ensure a seal.

First, clean the fitting surface

It would help if you made sure that the fitting surface and the installation area are clean and that there are no contaminants affecting the sealing effect.

Second, inspect the fitting

You need to check the fitting for damage. Then replace it with a new one immediately if there is any damage.

Then, choose the sealant

Generally, metal-to-metal sealed and O-ring sealed fittings do not require additional sealant. However, if you need to use sealant, choose the right sealant and use it with your fitting.

Next, install the fitting

When installing the fittings, either by hand or with the help of tools, make sure that the fittings are installed in place. But don’t install it too tightly, as this may cause the fitting to deform.

Finally, check carefully

The last step is also the most important one, you need to carefully check whether the installation is in place and whether it produces leaks. If you find any problems with the fitting seal, reinstall it again.

Conclusion

When selecting various sealing forms of fittings, be sure to consider the pressure, temperature, and compatibility of the environment in which they will be used. Regardless of the sealing form of the fitting, you must install the fitting according to professional standards to ensure that the sealing will not fail and to ensure the safety of the hydraulic system.

How to Measure Hydraulic Fittings

How to Measure Hydraulic Fittings?

Welcome to this all-inclusive guide on measuring hydraulic fittings, a crucial task that demands precision and expertise. Whether you’re a seasoned hydraulic salesperson or a maintenance professional, this guide is designed to walk you through the entire process. From selecting the right tools to understanding the significance of each measurement, we’ve got you covered. We’ll also shed light on common mistakes that can compromise your hydraulic system’s integrity. So let’s dive in and set the stage for a hydraulic system that’s both reliable and efficient.

Tools Required for Accurate Measurements

When it comes to measuring hydraulic fittings, you can’t afford to skimp on tools. The right tools not only make the job easier but also ensure that you get accurate and reliable measurements. Here’s what you’ll need:

Calipers or Measuring Tape

These are your go-to tools for measuring the diameter of the threads. Calipers are more precise, but a good-quality measuring tape can also do the job.

Thread Pitch Gauge

This tool is essential for determining the thread pitch, which is the distance between the threads. A wrong pitch can lead to incompatible fittings, so don’t overlook this.

Reference Charts

These charts contain standard sizes and dimensions for various types of hydraulic fittings. They’re a quick way to cross-reference your measurements.

Protractor

Protractors can be used to measure the angles of hydraulic fittings. The commonly fitting elbows are 30-degree, 45-degree, and 90-degree elbows, and there also exist other elbows. Special gauges are available to measure the angle of the sealing surface inside and outside of the fitting, such as 37-degree cone, 45-degree cone, and 30-degree cone.

Precautions to Take Before Measuring

Before you even touch a caliper or gauge, there are some precautions you need to take:

Depressurize the System: Always make sure the hydraulic system is off and depressurized. This is not just for your safety but also for accurate measurements.

Wear Safety Gear: Put on your gloves and safety glasses. It’s better to be safe than sorry.

Clean the Fitting: Dirt and debris can affect your measurements. Make sure the fitting is clean before you start.

Basic steps for measuring hydraulic fittings

Step 1: Determine the type of hydraulic fittings

First, you need to determine the types of hydraulic fittings. Is it a hose fitting or an adapter?

Before considering measurements, you need to determine the type of hydraulic fittings to be used. This step is critical because each fitting type has its own set of specifications and compatibility requirements. Whether you are an experienced hydraulic salesperson or a maintenance professional, knowing the type of fitting is the foundation for the work that follows.

There are several types of hydraulic fittings, each with its own set of standards. The most common types are JIC (Joint Industry Committee), NPT (National Pipe Thread), and ORFS (O-ring Face Seal). These are not just random acronyms, but industry standards that define the shape, thread, and function of the fitting.

So how do you recognize the type of fitting? First, check the fitting itself for any markings. Manufacturers usually print markings on the fitting type so that it is straightforward to identify. For example, in general, a US fitting will have two scores on it, whereas an imperial will only have one. If not, consult the manufacturer’s guide or specification sheet.

Why is this step so important? Using the wrong type of fitting can lead to a host of problems, from small leaks to catastrophic system failure. For example, NPT fittings may look similar to BSPT fittings, but they have different thread patterns and sealing methods. Mixing them up can be a recipe for disaster.

In short, determining the type of fitting is not only the first step, it’s a critical one. It sets the stage for all subsequent steps, from measurement to installation. So take your time, utilize the resources available, and make sure it’s correct. This is one area where you can’t rely on guesswork.

Step 2: Measuring thread diameter

Once the type of fitting has been determined, the next critical step is to measure the thread diameter. This may seem like a simple task, but it is both difficult and important. Thread diameter is a key factor in ensuring that hydraulic fittings are compatible with the rest of the system. Mismatched fittings can lead to leaks, inefficiency, and even system failure.

For this, you need a reliable measuring tool. Calipers are the most recommended standard tool in the industry, with accuracy to suit everyone’s needs. However, a high-quality tape measure can also do the job. Choosing between the two usually depends on the accuracy you need and the tools you have on hand.

For male threads, you need to measure the outside diameter. Place the caliper at the widest part of the thread, making sure it’s snug against the thread, but not so tight as to distort the thread. For female threads, the process is similar, but you are measuring the ID. Insert the caliper into the fitting and expand the caliper until it touches the inside wall.

Here’s a pro tip: Always double-check your measurements. Even the most experienced professionals can make mistakes, and in hydraulics, even a one-millimeter error can cause problems. Take several readings and then use the average value as the final measurement.

Why is this step so important? Because thread diameter directly affects a fitting’s ability to form a secure, leak-proof connection with the hose or component it connects to. Getting this wrong can jeopardize the integrity of the entire hydraulic system, not just a quick fix.

In short, measuring thread diameter should not be taken lightly. It requires precision, the right tools, and a double-checking mindset. Getting this right sets the stage for a reliable and efficient hydraulic system.

Step 3: Determining thread pitch

After measuring the thread diameter, the next critical step is to determine the thread pitch. Thread pitch is a critical factor in ensuring compatibility and a leak-free system. Thread pitch is essentially the distance between individual threads, measured in threads per inch (TPI). A mismatch in thread pitch can result in a poor fit, causing leaks and even damaged threads.

To measure thread pitch, you need a specialized tool called a thread pitch gauge. This tool comes with a variety of inserts, each labeled with a different TPI value. To use it, simply align the blades with the threads of the fitting until you find an exact match. This will give you the TPI value of the fitting.

Now, you may ask, what’s so important about this? Even if two fittings have the same diameter, differences in thread pitch can cause them to be incompatible. For example, a 14 TPI 1-inch NPT fitting will not fit a 12 TPI 1-inch NPT fitting. The threads won’t line up and you’ll either end up with a loose connection or damage the threads by forcing them together.

Here’s a pro tip: Always double-check the thread pitch measurement. A small mistake here can lead to big problems. If necessary, take several readings and confirm the TPI according to the manufacturer’s specifications whenever possible.

In hydraulics, it’s all in the details, and thread pitch is one detail that should not be overlooked. It’s not just about making sure you tighten the joint, it’s about ensuring a secure, long-lasting connection that won’t fail under pressure.

Step 4: Measuring seat angles

Once the thread diameter and pitch have been determined, it’s time to focus on another critical aspect: the seat angle. Seat angle is often overlooked, but it plays a critical role in ensuring a leak-proof connection. The angle is the inclination of the fitting seat as it interacts with its mating parts. Mismatched seat angles can lead to leaks, reduced system efficiency, and even component damage.

To measure the seat angle, you need to use a protractor or an angle-measuring tool designed for hydraulic fittings. Place the tool on the fitting seat and read the angle. The process is simple and straightforward but requires precision. One degree of deviation can compromise the integrity of your hydraulic system.

The seat angle determines how well the fitting seals against its mating parts. A perfect fit creates a leak-proof seal that can withstand high pressures and harsh conditions. Conversely, a mismatch can lead to leaks, which can be not only a nuisance but also a serious operational hazard. Leaks can lead to hydraulic fluid depletion, increased maintenance costs, and even, in extreme cases, system failure.

Here’s a pro tip: Always check seat angle measurements against the manufacturer’s specifications. This double-checking ensures that you are doing it correctly and helps you avoid costly mistakes.

In short, measuring the seat angle is a step that cannot be skipped or rushed through. It requires the right tools, consistent operation, and a meticulous attitude. Giving seat angle the attention it deserves not only ensures a leak-free connection but also improves the overall reliability and efficiency of your hydraulic system.

So the next time you choose a hydraulic fitting, don’t just focus on the threads. Give due attention to the valve seat angle as well. This small detail can have a major impact on the performance and reliability of your hydraulic system.

Step 5: Measuring fitting length

When it comes to hydraulic fittings, length is often the forgotten dimension. While thread diameter, pitch, and seat angle get all the attention, fitting length is just as critical to system performance and safety. Incorrect length can lead to improper sealing, increased stress on the fitting, and even system failure.

To measure fitting length, you’ll need a reliable measuring tool such as a caliper or straightedge. Align the tool with the joint, starting at one end and extending all the way to the other. Make sure you measure the entire length, including any flanges or extensions that may be part of the joint. You can’t use approximations for this step; accuracy is key.

Length directly affects a fitting’s ability to form a secure connection. Too short, and there’s a risk of an incomplete seal, leading to leaks. Too long, and it puts too much pressure on the joint and connecting parts, potentially leading to cracks or breaks over time.

Step 6. Cross-referencing measurement results

You’ve measured thread diameters, determined thread pitches, checked seating angles, and even verified joint lengths. But there’s one more critical step before you continue with the installation: cross-referencing the measurements. In this step, you take out your reference charts and double-check that each measurement meets industry standards and your specific needs.

Even small differences in measurements can lead to serious problems. Cross-referencing is the final quality check to ensure that the fittings you’re about to install are the correct fittings for your hydraulic system. It’s the last line of defense against leaks, inefficiencies, and potential system failures.

To cross-reference, compare your measurements to the data on a reference chart. These charts often include standard sizes, thread types, and dimensions for various hydraulic fittings. Make sure your fitting measurements match the types and sizes listed. If they don’t match, you’ll have to redesign.

Here’s a pro tip: Always have the latest reference charts on hand. Manufacturers occasionally revise specifications, and using outdated information can lead to errors.

In conclusion, cross-referencing measurements is not only a best practice but a necessity for anyone who values the reliability and safety of their hydraulic systems. It’s the final step in confirming that you’ve done your due diligence to ensure that the fittings you install today won’t cause problems tomorrow. Taking the time to cross-reference sets the stage for a durable hydraulic system.

Common Mistakes to Avoid

When it comes to hydraulic fittings, there is very little margin for error. Even seasoned professionals can make mistakes that compromise the integrity of the system. Here are some common mistakes to watch out for:

● Over-tightedning fittings

It’s a common misconception that the tighter you tighten, the better. Over-tightening hydraulic fittings can distort their shape, which can lead to leaks and even component failure. The key is to find a proper position so that the joint is firm but not stressed. Always use a torque wrench and follow the manufacturer’s torque specifications to avoid this mistake.

● Using incompatible thread types

In the world of hydraulics, not all threads are created equal. Using an incompatible thread type can definitely lead to failure. Always double-check that the threads of the fitting match the threads of the connected component. A mismatch can lead to leaks, inefficiency and even catastrophic failure.

● Improper use of sealing methods

Sealing is an art in itself. Using the wrong sealing method or material can compromise the integrity of your hydraulic system. Always follow the manufacturer’s instructions when using a sealing method. Whether it’s a thread sealant or an o-ring, using the correct sealing method is critical to a leak-proof connection.

Conclusion

The Comprehensive Guide to Measuring Hydraulic Fittings is a great resource for professionals in the hydraulic industry. It covers the entire process from the required tools to the final cross-referenced measurement. The guide emphasizes the importance of each step and highlights common mistakes to avoid. By following these guidelines, you can ensure optimal performance and safety of your hydraulic system. If you only have old fittings and are not sure about the measured data, then you are welcome to contact us and we can give you an accurate answer！

Different Types of Hydraulic Fittings

Hydraulic fittings are indispensable components in hydraulic systems as they guarantee the safe transportation of fluids. There are various types of hydraulic fittings designed for different fluid environments. What are the particular types of hydraulic fittings available in the market?

Introduction

Why do you need hydraulic fittings? Hydraulic fittings are connection components used to connect tubes and equipment in hydraulics. They allow gases, liquids, dust, and semi-solids to pass safely through the hydraulic products.

Different hydraulic systems require different types and standards of fittings, resulting in a variety of fittings with unique appearances, threads, and benefits. Proper use of these fittings is essential to ensure the hydraulic system operates normally.

This article will describe the types of hydraulic fittings in detail, so please continue to read.

Hydraulic fittings catalog

Hose fitting

Hose fittings have a hose end at one end and can be used to connect hoses. The other end has different types of threads. The threaded end can be used with couplings, pipes, and hydraulic machinery.

Hydraulic hose fittings are available in straight, 30-degree elbows, 45-degree elbows, and 90-degree elbows. These different elbow fittings and adapters can be used to change the direction of the fluid or the height of the line in the hydraulic system. For more info, consult a professional!

Adapter

Hydraulic adapters are a broad category, which is a general term for many types of adapters. The ends of common adapters are threaded ends, including various types of threads. These ports can have the same type of thread or different types of threads. The different types of threads allow the fitting to connect two or more components of different sizes and with different roles.

Adapters are commonly applied in a variety of hydraulic environments and they ensure the proper operation of hydraulic systems. Topa has a complete range of hydraulic adapters, including tube fittings, male fittings, NPT, and JIC with guaranteed quality. Please contact us!

Bulkhead

A hydraulic bulkhead adapter is used to connect hydraulic components through the plate or cylinder wall. It consists of a fitting and a nut that passes through the obstruction and a nut that holds the fitting in place and together they form a tight connection.

Bulkhead fittings are available in NPT, BSPP, and JIC threads and can be used in automotive, aerospace, and industrial applications.

Tee and cross

Both tee and cross fittings can combine or separate fluids in a hydraulic system. Tee fittings have three ports, which can be the same thread or different threads. A cross has four ports and can split the fluid in three directions. Tees and crosses can be adapted to complex hydraulic environments, ensuring the safe connection of multiple hydraulic lines.

Used in the automotive, industrial, and construction industries, tees and crosses ensure the smooth transfer of fluids in hydraulic systems.

Plugs and caps

Plugs and caps are essential components of a hydraulic system. They are used to close and seal the end of a hydraulic system to prevent contaminants from entering the system and causing damage.

Plugs are male-threaded fittings that connect to the female-threaded end of the hydraulic system to form a seal. The cap is a female fitting that seals the male threads to prevent contaminants from entering the system. It’s important to make sure the cap is securely in place to protect your hydraulic system from dirt and other harmful particles.

Plugs and caps are key accessories for the safety and cleanliness of hydraulic systems, and they play a huge role in construction, transportation, agriculture, and industry.

Flange

Flange hydraulic fittings can be secured by flange clamps, bolts, and screws. Flange fittings can withstand different levels of pressure, such as 3000psi, 6000psi, and 9000psi. 3000psi flange is called SAE Code 61 flange and 6000psi flange is called SAE Code 62 flange.

Flange fittings are available in different sizes, threads, and materials. The common threads used for flange fittings are JIC, metric, and ORFS.

Reusable

Reusable fittings are split fittings that consist of two parts: the fitting and the ferrule. These couplings can be used to connect hoses and other components, and the ferrule holds the hose in place. Reusable fittings are available in a wide range of thread types including JIC, BSP, NPT, metric, and SAE.

Reusable hydraulic fittings are easy to remove and install without the need for additional tools. These fittings are commonly used in applications that require field disassembly, reducing time wasted and maintenance costs.

One-piece

One-piece hydraulic fittings are one of the most popular types of couplings. These fittings are one piece and cannot be disassembled, eliminating the need for additional components. They allow the fitting to be permanently mounted to the hydraulic hose, creating a strong connection.

One-piece hydraulic fittings can be used in high-pressure environments and can withstand extreme environments. Industries such as gas, mining, and construction require these couplings to reduce the risk of machine operation and to ensure the proper functioning of hydraulic systems.

Parker one-piece hydraulic fittings are the standard fittings and Topa can produce Parker standard one-piece products, feel free to contact us!

Push lock

Push lock fittings are also known as push-to-connect and push-on fittings, they have a barbed end and a threaded end. The barbed end can be installed directly into the appropriate size hose, while the threaded end can be connected to the appropriate component to form a secure and reliable connection.

Push lock fittings generally do not require additional clamps to secure them, so they are primarily used in low to medium-pressure applications. They are easy to install and disassemble, significantly improving the efficiency of hydraulic systems and reducing operating costs.

Compression

Compression fittings, including nuts, ferrule, and joints, are commonly used to connect hydraulic hoses and hydraulic parts of different sizes to form a leak-free seal. One-piece or two-piece ferrule fittings with one or two ferrules (olive) may be used depending on your needs. These fittings are the stars of any hydraulic system.

Compression fittings do not require additional sealants or gaskets and are easy to disassemble, so they are suitable for use in air conditioning, brakes, and refrigeration systems.

Hose barb

Hose barb fittings are hollow fittings that have a barb on one end and a thread on the other. The barbed end can be installed directly into the hose, allowing the hose to expand and deform, and then securely fixed.

Hose barb fittings are very common fittings, they are widely used for their high performance, convenience, and value. Barb fittings can be used in low-pressure fluid applications and generally do not require additional clamps to hold them in place.

Quick coupler

Quick couplings are “fast” in that they can be installed and removed quickly, are not easily dislodged, and have a strong seal. Quick couplings typically include NPT and BSP threads, both of which are commonly available for many applications.

Hydraulic quick-release couplings consist of a plug and a socket that allow fluid to pass directly through when they are mounted together. If disconnected, the valve in the quick coupling closes, preventing fluid from leaking.

The tight construction of quick couplings ensures the safe transport of fluids as well as gases in piping systems, including hydraulic hoses. The use of quick couplings may be required for applications such as industry, transportation, oil, and gas.

Ferrule

Ferrule is a cylindrical metal component that can be used with hydraulic hoses. Ferrules include standard ferrule，crimp-on ferrules, and reusable sleeves. Crimp-on sleeves are permanently installed by a crimping machine and cannot be removed. Reusable sleeves can be installed with screws and they can be disassembled for multiple uses.

Sleeves are generally available in stainless steel and carbon steel and can be galvanized or plated to improve aesthetics and corrosion resistance.

Banjo

Banjo hydraulic fittings include hollow bolts and ball couplings that connect pipes and hoses. Banjo bolts allow fluid to flow from the inside of the coupling and out through small holes in the side, thus ensuring proper system operation.

These fittings are commonly used in automotive brakes, fuel, and hydraulic systems to control fluid pressure and performance.

Grease fitting

Grease fittings are used to inject grease into bearings. They are also known as zerk fittings and grease nipples. The tip of the grease fitting has a ball that prevents contaminants from entering.

Grease fittings are available in steel, stainless steel, and brass and can be used in aircraft bearings and similar applications.

Camlock

Camlock couplings are a special type of quick-release coupling that has the advantage of being easy to install and simple to operate. There are many types of camlock couplings, such as types A, B, C, D, E, F, DP, and DC. These different types are different in appearance and use.

Camlock couplings are suitable for dirty environments and will not be damaged by contaminants, so they are used in many applications. Camlock couplings can be found in industries such as oil, transportation, and industry.

Test fitting

Test point fittings can be installed at pressure measurement points to check the pressure in a hydraulic system and troubleshoot factors. Test point fittings can be used without shutting down the hydraulic piping system, reducing the cost of downtime.

High-performance, durable test couplings are used in cranes, hydraulic presses, construction equipment, and oil and gas applications.

Swivel

Swivel fittings allow the hose to follow the fitting and prevent it from kinking or twisting. They are usually made of metal, which increases durability and strength.

Threads of hydraulic fittings

Because of the special characteristics of swivels can be used in tight places, reducing damage to the hose and reducing maintenance costs.

Almost all hydraulic fittings have threads that distinguish the type of fitting, and determine the standard of the fitting and the use environment. Each type of threaded fitting differs in thread angle, profile, and cone seat.

JIC

JIC (Joint Industrial Council) hydraulic fittings are straight threads with a 37-degree flare seat, they are generally SAE J514 standard. JIC male fittings can be used with female fittings to form a metal-to-metal seal without the aid of a seal. Those fittings are American standards and are popular in the US and European countries.

SAE 45°

SAE(Society of Automotive Engineers) 45-degree hydraulic fittings are SAE J512 standard with a 45-degree cone to form a tight mechanical connection. SAE fittings are commonly used in low-pressure applications such as fuel lines and refrigeration systems. And they are not compatible with JIC 37-degree fittings.

SAE ORB

SAE O-ring boss male hydraulic fittings include an O-ring and straight threads, while the female fittings include chamfers and sealing surfaces. The male and female connectors are installed together to form a tight seal.

BSP

BSP (British Standard Pipe) is a british standard fitting that is popular in Europe and the U.K. BSP hydraulic fittings include a 30-degree cone and can be divided into BSPP (British Standard Pipe Parallel) and BSPT (British Standard Pipe Taper) two types.

BSPP fitting is straight thread fitting, it’s thread is parallel. This type of fitting can be sealed by metal seal or sealant.

BSPT fittings are tapered threads, which are similar to NPTF fittings. However, there is a difference between these two threads: NPT thread has a 60-degree taper, while BSPT thread has a 55-degree taper. This difference is not very obvious, so you can use a thread gauge to measure the difference.

NPT

There are two types of NPT hydraulic fittings: NPTF fittings and NPSM fittings.

NPTF (National Pipe Tapered Fuel) fitting is dry seal fitting with a 60-degree thread taper. After installing the male fitting to the female fitting, the threads are deformed to a certain degree, creating a seal. NPTF fittings are typically used in fluid power systems and provide a good connection.

NPSM (National Pipe Straight Mechanical) fitting is a straight threaded fitting on both male and female ends. They both have a 30-degree chamfer to create a mechanical seal and are commonly used in fluid power systems. NPSM female fittings can be used with NPTF male threads.

Metric

The Metric/DIN fitting is a US standard fitting with a 24-degree taper. They include parallel threads and tarped threads. Straight thread fittings need a sealant or an o-ring to create a strong seal. Ans tapered metric fittings can set a metal seal by male and female threads.

JIS

JIS(Japanese Industrial Standard) is a Japanese thread and is commonly used in Asian countries. It includes tapered JIS hydraulic fittings and 30-degree cone JIS fittings.

Both male and female threads of tapered JIS fittings have a certain taper, similar to BSPT threaded fittings, and both can be used together.

The 30-degree cone JIS fitting has parallel threads and is divided into male inverted seat fittings and 30-degree angle female fittings. The male inverted fittings are similar to BSPP fittings in that they both have a 30-degree chamfer and can be used interchangeably. 30-degree female JIS fittings are identical to JIC 37-degree fittings in that they have the same sealing form, but they are not interchangeable.

ORFS

ORFS(o-ring face seal)hydraulic fittings are straight threaded and have an O-ring installed in the groove of the male end to form a seal with the female end, which improves sealing and reduces vibration damage.

AN

AN （Army-navy）hydraulic fittings are flared fittings with a 37-degree angle to create a metal seal. This type of fitting is mainly used to connect hoses and metal pipes. It is similar to JIS hydraulic fittings and is theoretically universal, but it is not recommended and used interchangeably.

Conclusion

This article describes the types of hydraulic fittings in general, if you still have doubts, we can help you！

What are hydraulic fittings?

What Are Hydraulic Fittings?

Currently, hydraulic systems exist in many applications, so it is vital to understand the knowledge of hydraulic fittings. Now you can follow us and learn more about hydraulic fittings!

Content

Introduction
Types of hydraulic fittings
Threads of hydraulic fittings
Common Materials of Hydraulic Fitting
International Standards
Applications
Select the correct fittings
Hydraulic fitting identification
Hydraulic fitting installation
The Production Process of Hydraulic Fittings
Hydraulic fitting sealing methods
Conclusion

Introduction

Hydraulic fittings are components that act as connections. They connect the components of a hydraulic system to form a strong seal and ensure the proper functioning of the hydraulic system. Hydraulic fittings allow the hydraulic fluid to combine or diver. In some hydraulic systems, special hydraulic fittings can change the direction of the fluid. Also, hydraulic fittings like plugs can be used as the end of a hydraulic piping system to stop fluid leaks.

Usually, hydraulic fittings are metal products that can withstand different pressure specifications. Common fittings vary in corrosion resistance, wear resistance, and sealing properties depending on the materials. Most fittings are made according to international standards, so they can be adapted to fit the needs of all applications.

All Types of Hydraulic Fittings

Hydraulic fitting is a collection. There are many sub-categories of hydraulic fittings, which differ in appearance, function, and operating conditions.

Hose fittings

One end of a hydraulic hose fitting is the threaded end and the other end is the hose connection end. The threaded end is divided into a male and a female end, the male end are external threads and can be connected with the female end. The hose end is inserted into the corresponding size of the hose and can be fixed with the help of clamps.

Adapters

Both ends of the adapter are threaded ports. The hydraulic adapter has male-to-male, male-to-female, and female-to-female types. Both sides of the adapter can be the same threads or different threads.

Tee and Cross

Tee fitting has three threaded ends and a cross fitting has four threaded ends. Tee and cross fittings are used to divide the fluid into different directions, tee fittings can divide the fluid into two directions and the crosses can divide the fluid into three directions.

Bulkhead

Bulkhead fittings are used to pass through a fixed wall or plate to connect the fitting to other components. They are usually used in bulkheads or tanks.

Reusable/Field attachable

A reusable (field-attachable) hydraulic fitting has a threaded end on one end, a hose end with a reusable sleeve on the other. These fittings are easy to disassemble and install. And can be removed or installed multiple times.

One-piece

One-piece fittings are different from reusable fittings because they are one-piece fittings with non-removable sleeves. These fittings are commonly available in the 43 series, 71 series, and HY series.

Plug and cap

A plug is a male threaded fitting and a cap is a female threaded fitting. They are both used at the end of a pipe system to stop fluid leakage or contamination.

Flange

Flange fittings can be used in high-pressure environments and are bolted together to form a seal. There are two main types of flange fittings: SAE Code 61 and Code 62 series.

Ferrule

The Ferrule is a cylindrical metal fitting used with hydraulic hoses to secure hoses and hose fittings.

Topa can offer different types of hydraulic hose fittings and hydraulic adapters, please contact us!

Hydraulic Fitting Thread Types

Every hydraulic fitting has threads, the most common threads used internationally are as follows:

Threads	Types
JIC(Joint Industrial Council)	Parallel
NPTF(National Pipe Tapered Fuel)	Tapered
NPSM(National Pipe Straight Mechanical)	Tapered
BSPP (British Standard Pipe Parallel)	Parallel
BSPT(British Standard Pipeapered)	Tapered
JIS(Japanese Industrial Standards)	Parallel
Metric/DIN	Tapered/Parallel

JIC

JIC (Joint Industrial Council) is a 37-degree or 74-degree cone flare thread, which is more popular in the U.S. JIC fittings threads are a form of metal-to-metal sealing and do not require additional sealant.

BSP

The BSP (British Standard Pipe)thread is more popular in the UK. It has two types, BSPP(Parallel), which is a straight thread, and BSPT(Tapered), which is a tapered thread. Both of these threads are 60-degree cones.

NPT

The common branches of NPT threads are NPSM(National Pipe Straight Mechanical) and NPTF(National Pipe Tapered Fuel). NPT has a certain taper to create a metal-to-metal seal.

JIS

JIS is the thread type that is used more often in East Asian countries such as Japan. This thread is a 30-degree cone, similar to the BSP thread, but not identical.

Metric/DIN

Metric threads are also known as DIN threads. The standard metric thread is the 24-degree cone and is available in both light and heavy-duty. They are popular all over the world.

ORFS

O-rings seal means fittings have O-rings in the flat grooves, and these fittings are highly resistant to sealing and vibration.

AN

The AN (Army-Navy) thread is a 37-degree flare, similar to the JIC thread, but not exactly the same as other flare threads.

Common Materials of Hydraulic Fittings

In the hydraulic environment, metal fittings are the most common choice. In hydraulic environments, metal hydraulic fittings are the most common.

Depending on the acid or alkaline environment and pressure range, the type of metal fitting varies.

The most common metal types used in hydraulic systems are carbon steel, stainless steel, brass, and aluminum.

Carbon Steel

The most common metal used in hydraulic systems is carbon steel. Carbon steel is made of carbon and steel and can be used in many applications. Carbon steel connectors are less resistant to corrosion but are easy to process, resistant to pressure, and cost-effective.

Stainless Steel

In some ways, stainless steel is the most superior metal. Stainless steel fittings are resistant to corrosion, pressure resistance, and abrasion resistance, durable and strong, but can be relatively expensive. Stainless steel fittings are available in many standards, with 304 and 316 being the most popular choices.

Brass

Brass consists of copper and zinc, which is a special alloy. Brass in general is highly resistant to corrosion and is highly machinable. Brass fittings and tubing are recommended for applications such as automotive, domestic, and industrial.

Aluminum

Aluminum fittings are moderately corrosion-resistant, lightweight, and suitable for low-pressure environments. Aluminum brake fittings are more commonly used in automobiles and aircraft.

International Standards

ISO: ISO (International Organization for Standardization) is a world-class standard that covers many aspects of hydraulic fitting testing. These standards specify the performance and dimensional requirements for hose fittings, flanges, quick fittings, etc.

SAE: SAE (Society of Automotive Engineers) specifies standards for hydraulic fittings and hydraulic hoses to ensure that these fittings are dimensionally correct and can withstand the appropriate operating pressures. The most common standards for fittings and hoses are SAEJ512, SAEJ516, and SAEJ514.

DIN: DIN (Deutsches Institut für Normung) is a German standard that defines the thread, dimensional, and operational requirements for hydraulic hose fittings, compression fittings, and adapters.

Some famous brands have developed their own standards, such as Parker, Gates, Eaton, etc. Topa can do all kinds of standards, please contact us and tell us your needs.

Applications

Hydraulic fittings can be applied in a wide range of applications. As long as there are hydraulic systems in the applications, there is a definite need for hydraulic fittings. Different sizes, materials, and types of fittings are used in different environments. In general, these areas will require the use of fittings:

Agriculture: Tractors, harvesters, and irrigation systems all need hydraulic adapters.

Industry: Hydraulic systems are present in most equipment in industrial applications, so hydraulic fittings are present to keep the system running properly.

Construction: Excavators, bulldozers, and other large machinery and equipment require high-quality hydraulic fittings.

Oil and gas: Transporting and storing oil and gas requires hydraulic fittings that do not create leaks.

Marine: Marine transportation or offshore oil wells require corrosion-resistant, strong-sealing hydraulic fittings.

Transportation: Many industries will need to transport materials, so hydraulic piping can ensure the safe transportation of fluids under pressure.

Automotive: There are specific standard fittings for brake systems and fuel systems in automobiles. These fittings ensure the proper operation of the system.

Topa can offer security service and transportation to all customers, so contact us!

Selecting The Correct Hydraulic Fittings

The hydraulic system can only maintain normal operation if the correct hydraulic fittings are selected. Therefore, the selection of the right hydraulic fittings should be considered from the following aspects:

Size

The right size corresponds to the right installation for the right application.For example, imperial sizes are 1/8′, 3/8′, and 1/2′. Metric sizes are M8*1.0, M10*1.0, and M22*1.5, etc. American sizes are 1/8, 1 1/4, and 2, etc. When selecting a fitting, choose the fitting size carefully.

Hydraulic fittings size chart

No.	02	04	05	06	08	10	12	16	20	24	32
BSPP	G1/8″×28	G1/4″×19		G3/8″×19	G1/2″×14	G5/8″×14	G3/4″×14	G1″×11	G1.1/4″×11	G1.1/2″×11	G2″×11
BSPT	R1/8″×28	R1/4″×19		R3/8″×19	R1/2″×14		R3/4″×14	R1″×11	R1.1/4″×11	R1.1/2″×11	R2″×11
NPT	Z1/8″×27	Z1/4″×18		Z3/8″×18	Z1/2″×14		Z3/4″×14	Z1″×11.5	Z1.1/4″×11.5	Z1.1/2″×11.5	Z2″×11.5
JIC		7/16″×20	1/2″×20	9/16″×18	3/4″×16	7/8″×14	1.1/16″×12	1.5/16″×12	1.5/8″×12	1.7/8″×12	2.1/2″×20
ORFS		9/16″×18		11/16″×16	13/16″×16	1″ ×14	1.3/16″×12	1.7/16″×12	1.11/16″×12	2″×12
SAE				5/8″×18			1.1/16″×14
Flange					1/2″	5/8″	3/4″	1″	1.1/4″	1.1/2″	2″
Push in		04		06	08		12	16	20	24	32
Note: Metric threads are marked according to the outside diameter of the thread, and tube straight pipe is marked according to the outside diameter of the straight pipe.

Temperature

In hydraulic systems, there are differences in ambient temperatures. And the operating temperature range of hydraulic fittings should be selected according to the ambient temperature.

Application

The application environment of a hydraulic fitting determines the type of fitting. There are detailed differences in the types of fittings used for agricultural, industrial, marine, transportation, and automotive applications.

Media

The media present in a hydraulic system can cause differences in pH, temperature, pressure, and friction, so the fitting should be compatible with the media to ensure no leaks or contamination.

Materials

Different environments will require different materials for hydraulic fittings. Also, the cost of the fittings differs from material to material.

Pressure

The rated pressure of the hydraulic fitting should be higher than the system pressure to ensure that the hydraulic system will not leak or be damaged.

Hydraulic Fittings Identification

Each hydraulic fitting has its own characteristics, but some of them are not very obvious, so how to distinguish them?

First, observe the shape.

If one end of the fitting is a tube and the other end is threaded, then this is a hose fitting; if both fitting ends are threaded, then it is a hydraulic adapter. A fitting with three ports is a tee, and one with four is a cross fitting; The body of the swivel fitting can be rotated in all directions, and the sleeve of the reusable fitting is removable, while the one-piece fitting is a whole part.

Next, use a thread gauge.

Some threads can be observed visually as straight or tapered threads. For example, BSPT and NPT are tapered threads. BSPP and UN/UNF are straight threads. If it is difficult to observe, use the corresponding thread gauge to check.

Then you can use a pitch gauge to measure the pitch.

Use vernier calipers to determine the size of the fitting, or the inside(I.D) and outside diameter (O.D)of the fitting.

If you really can’t identify what type of fitting you have, check your supplier’s data, or contact us directly!

Hydraulic Fittings Installations

Hydraulic fittings are divided into two major categories, hydraulic hose fittings, and hydraulic adapters. The two types of fittings differ in some details of the tools used and the installation process.

Selecting the right tool

Adjustable wrench: It can be adjusted according to the size of the fitting or hexagonal nut.

Cutting tool: used to cut the hose, tube, or pipe.

Sealant: Prepare sealing measures in advance if needed.

Protective equipment: Prepare gloves or goggles to protect yourself.

Installation

Hose fitting

Inspection: Check the appearance of the fitting before installation to make sure the threads are free of burrs, rust, and breakage.

Cutting: Cut the hose to the proper length.

Installation: Install the hose end of the fitting into the hose and tighten the nut to form a hose assembly. For crimp fittings, use a crimper to secure the fitting.

Test: Test for leaks in the hydraulic system.

Hydraulic adapter

Inspection: Check that there are no scratches, burrs, or breaks on the adapter.

Installation: You can apply a little lubrication to the adapter, use a wrench, and screw the fitting into the installation position. If the fitting has an O-ring seal, make sure the O-ring is not broken. And make sure the O-ring is installed in the correct position.

Testing: Test the assembly to make sure there are no leaks in the hydraulic system.

In addition, there are some special fittings: welded hydraulic fittings. These types of hydraulic fittings require professional installers to weld them.

If you have any installation questions, contact us!

The Production Process of Hydraulic Fittings

The factory will strictly follow each step of the process when producing hydraulic fittings to make the best quality fittings.

Raw material purchase – Raw material processing – CNC Lathe processing – Surface treatment – Inspection

Hydraulic fittings are generally processed using hot forging, which greatly improves the strength and toughness of the fittings.

In CNC lathe processing, the fitting will go through several steps, including punching, profile processing, and thread processing.

After the fitting is processed, it needs to undergo surface treatment to improve the aesthetics of the fitting. Common treatments include galvanizing, pickling, grinding, polishing, etc.

All fittings of Topa are inspected several times for appearance, threads, and quality. Topa factory uses salt spray testers, pulse testers, and other instruments for this purpose.

Hydraulic Fittings Sealing Methods

Some hydraulic fittings can be sealed directly by the metal surface, or by O-rings. Except for this type of fittings, others need some external help.

Teflon tape: can be wrapped directly around the threads to create a seal during installation; NPT threads often require tape to create seals.

Sealant: Loctite 5452 liquid thread sealant can be applied directly to the threads. When the fitting is used in a hydraulic system, it can directly seal the gap between the fitting and the component connection.

Conclusion

Hydraulic fittings are an integral component of the hydraulic system. Therefore, it is crucial for everyone to learn about all aspects of hydraulic fittings.

Topa is a professional hydraulic fitting factory and industry, we know a lot about hydraulic fitting products, if you still have questions, please contact us!

Topa Blog

Find out more about Topa Blog and learn more about specialized hydraulic fittings.

7 Tips to Prevent High Pressure Hose Assembly Failure

6 Tips to Prevent High-Pressure Hose Assembly Failure

9 Causes of Hydraulic Fitting Leaks

Unlock the Secrets of Hydraulic Hose Laylines

The Ultimate Guide to Push to Connect Fittings

Two Piece vs One Piece Hose Fittings

6 Ways to Protect Hydraulic Hoses

Happy Mother's Day!

On this wonderful day, all Topa employees made Mother’s Day baskets together with their own hands and dedicated the most beautiful bouquets to all mothers.

Motherhood is a collection of love and sacrifice. Every mother is an unsung hero in life, who shapes our extraordinary life with their love.

On this Mother’s Day, all Topa employees send their deepest gratitude and warmest wishes to all mothers around the world. May your every day be filled with love, joy, and happiness. May you feel happy, not just today, but every day.

Happy Mother’s Day!

Mar, 2023

The processing steps of brass fittings

Material preparation: Choose suitable brass material, and cut and prepare according to the shape and size of the fittings.
Preprocessing: cleaning, rust removal, surface treatment, etc.
Hot processing: usually using forging, cold extrusion, hot extrusion, stretching, and other processes, to press the heated brass material into the shape of the fitting.
Cold processing: further refine the shape and size of the fitting through processes such as cold drawing and cold extrusion.
Surface treatment: including polishing, grinding, sandblasting, and other processes, to treat the surface of the fitting and improve its surface quality and aesthetics.
Inspection and testing: Check the size, hardness, density, corrosion resistance, and other aspects of the fitting to ensure its quality.

7.Packaging and storage: Pack and store the fittings to prevent damage and corrosion during transportation and storage.

It should be noted that the processing steps of brass fittings may vary depending on the specific process and product type.

Importance of proper maintenance and inspection of hydraulic metal fittings

Hydraulic metal fittings are critical components of hydraulic systems that play a key role in maintaining system performance and reliability. Proper maintenance and inspection of these fittings is essential to ensure that they are functioning correctly and that the hydraulic system is operating safely and efficiently.

Regular inspection of hydraulic metal fittings can help detect potential problems early, such as leaks or cracks, before they lead to more serious issues. Proper maintenance, including cleaning and lubrication, can also help extend the life of these fittings and prevent premature failure.

In addition to ensuring proper functioning of the hydraulic system, regular maintenance and inspection of hydraulic metal fittings can also help improve workplace safety by reducing the risk of accidents or injuries caused by hydraulic system failures.

Ultimately, the importance of proper maintenance and inspection of hydraulic metal fittings cannot be overstated. By taking proactive measures to care for these critical components, hydraulic system operators can ensure reliable performance, extend the life of their equipment, and prevent costly downtime and repairs.

Benefits of using hydraulic metal fittings in industrial applications

Hydraulic metal fittings are widely used in industrial applications because of their various benefits, including:

Durability: Hydraulic metal fittings are made of high-quality materials, such as stainless steel or brass, which make them highly resistant to wear and tear, corrosion, and rust. This makes them ideal for use in harsh industrial environments.
Reliability: Hydraulic metal fittings are designed to withstand high pressure and temperature variations, ensuring that they can handle the demands of heavy-duty industrial applications. They are also less prone to leakage and other types of failures compared to other types of fittings.
Versatility: Hydraulic metal fittings are available in a wide range of sizes, shapes, and configurations to meet various industrial needs. They can be used in a variety of applications, including fluid transfer, hydraulic systems, and compressed air systems.
Easy to Install: Hydraulic metal fittings are easy to install and replace, which can save time and reduce maintenance costs. They can also be adapted to existing systems with minimal modifications.
Safety: Hydraulic metal fittings are designed to be safe and reliable, ensuring that workers are protected from any potential hazards. They are also leak-free, preventing any dangerous spills or accidents.

Overall, hydraulic metal fittings are an excellent choice for industrial applications due to their durability, reliability, versatility, ease of installation, and safety features.

Common Causes of Hydraulic Hose Failure and How to Prevent Them

Hydraulic hoses are a critical component of hydraulic systems, and their failure can cause significant damage to machinery and equipment. Here are some common causes of hydraulic hose failure and how to prevent them:

Abrasion and Wear: Hydraulic hoses can experience abrasion and wear due to continuous exposure to moving parts, sharp edges, and other harsh environmental conditions. To prevent abrasion, ensure that hoses are properly routed and protected, and use abrasion-resistant materials.
Overheating: High temperatures can cause the rubber in hydraulic hoses to degrade, leading to cracks and leaks. To prevent overheating, ensure that the hydraulic system is properly cooled and that hoses are not exposed to excessive heat.
Pressure Spikes: Hydraulic hoses can fail due to pressure spikes caused by rapid changes in pressure within the system. To prevent pressure spikes, use pressure relief valves and ensure that the system is properly designed and maintained.
Improper Assembly: Hydraulic hoses can fail due to improper assembly, such as incorrect crimping or incorrect installation of fittings. To prevent improper assembly, follow the manufacturer’s instructions and use the proper tools and equipment.
Chemical Degradation: Hydraulic hoses can degrade due to exposure to chemicals, such as hydraulic fluid, solvents, and cleaners. To prevent chemical degradation, use hoses made from materials that are resistant to the specific chemicals in the hydraulic system.
Fatigue: Hydraulic hoses can fail due to repeated bending and flexing, leading to cracks and leaks. To prevent fatigue, ensure that hoses are properly supported and use hoses made from materials that are resistant to fatigue.

By understanding the common causes of hydraulic hose failure and taking steps to prevent them, you can ensure the long-term reliability and performance of your hydraulic system.

Jun, 2023

How to Identify Hydraulic Fittings ?

Content

Identify the Type of Fittings

Hose Fittings

Adapters

Compression Fittings

Permanent or Reusable Fittings

Quick Connects

Identify Thread Types

American Standard Thread

British Standard Threads

Metric Standard Threads

Measuring Dimensions

Conclusion

Other Articles

How do you stop a hydraulic fitting from leaking?

How tight should hydraulic fittings be?

How to attach hydraulic hose fittings?

Jun, 2023

How to Seal Hydraulic Fittings?

Table of Contents

Introduction

Why fittings leak

Sealing Methods

Flat Face Seal

E-type port end seal

A-type port end seal

O-ring face seal

Tapered Face Seals

Flared face seal

24° tapered seal

30° cone seal

Compression seal

Other Sealing Methods

Teflon Tape

Thread Sealants

How to Seal Hydraulic Fittings

Conclusion

Other articles

How do you stop a hydraulic fitting from leaking?

How tight should hydraulic fittings be?

How to attach hydraulic hose fittings?

Jun, 2023

How to Measure Hydraulic Fittings?

Table of Contents

Tools Required for Accurate Measurements

Calipers or Measuring Tape

Thread Pitch Gauge

Reference Charts

Protractor

Precautions to Take Before Measuring

Basic steps for measuring hydraulic fittings

Step 1: Determine the type of hydraulic fittings

Step 2: Measuring thread diameter

Step 3: Determining thread pitch

Step 4: Measuring seat angles

Step 5: Measuring fitting length

Step 6. Cross-referencing measurement results

Common Mistakes to Avoid

● Over-tightedning fittings

● Using incompatible thread types

● Improper use of sealing methods

Conclusion

Other articles

How do you stop a hydraulic fitting from leaking?

How tight should hydraulic fittings be?

How to attach hydraulic hose fittings?

May, 2023

Different Types of Hydraulic Fittings

Content

Introduction

Hydraulic fittings catalog

Threads of hydraulic fittings

SAE 45°

SAE ORB

Conclusion

Other articles

How do you stop a hydraulic fitting from leaking?

How tight should hydraulic fittings be?