Compression Hydraulic Fitting Manufacturer in China

❖ Load bearing capacity
❖ Wide range of applications
❖ Corrosion resistant
❖ Made of brass or stainless steel

Product List

Compression fittings consist of a nut, a ferrule (or olive), and the body of the fitting. Normally, compression fittings are used to tightly connect tubes or lines by means of ferrules and nuts. Compression fittings are easy to maintain, do not leak, and are durable in high-pressure environments.  Compression fittings include flared, non-flared, and push-in types, each of which has its own unique advantages. Topa provides all types of compression fittings. You can check the pictures below.

Brass Compression Fitting

Compatible with a wide range of tubing, brass compression fittings are easy to assemble with no need for flaring.

Brake Line Compression Fitting

Brake line compression fitting, when tight, the wedging action of sleeve between body and nut create a leak free connection.

DOT compression fitting

Compression fitting union , suitable for a broad range of industrial and commercial uses.

Compression fitting for water line

Compression fitting for water line, deep threads allow the fittings to bite better providing perfect compression.

Gas Line Compression Fitting

Gas line compression fitting, available in brass, not suitable high pressure.

NPT Compression Fitting

Brass compression connector adapter compression x NPT male thread.

Copper Compression Fitting

Compression fittings for copper tubing. For use with: air, cutting oil, fuel, hydraulic fluid, mineral oil.

Compression Adapter

Compression adapter can be used with metal tubing. And require no flaring of the metal tube to install.

Compression Couplers

Compression couplers are ideal for gasoline, grease, oil, water, vacuum, and airlines. Use copper, brass, and plastic tubing.

Brass Compression Fitting for Nylon Tubing

Brass compression fitting for nylon tubing, no rust.

Compression Elbow Fitting

Compression Elbow fitting is made of brass for durable. Easy to disassemble no flaring tool required.

Metric Compression Fitting

Metric compression fittings are available in stainless steel, and brass, depending upon the tubing material that is being used.

Compression Plumb Fitting

Compression plumb fitting can suitable for plumb, available in stainless steel, brass, steel.

Compression Tee Fitting

Compression tee fitting, designed for use in water, gas, or oil applications.

compressor to hose fitting factory

Compressor Hose Fitting

Compressor to hose fitting , high quality brass durable, no rust.

parker compression fittings manufacturer

Compression Fitting

Brass compression fittings are similar to Parker standards.

An Compression Fittings wholesale

An Compression Fittings

An Compression Fittings, these provide a tight metal-to-metal seal on tubing.

Topa stainless steel hydraulic fitting vendor

Stainless Steel Compression Fitting

Stainless steel compression fitting, ductility, and low magnetic permeability.

Compression Fittings Video

In this video, we showcase a variety of hydraulic compression fittings, highlighting each of the different hydraulic compression fittings.

We invite you to watch this video for an in-depth look at the different types of hydraulic compression fittings we offer. Whether you are looking for standard fittings or customized solutions, this video will help you make an informed choice based on your business needs.

Please feel free to ask us about any specific requirements or customization options. Our team is ready to assist you and provide you with the best hydraulic fitting solution for your needs.

Application

Compression fittings can be applied in a variety of applications, such as family, agriculture, industry, automotive, etc. Since compression fittings are easy to disassemble and maintain, most people can use them directly without any special skills.

agriculture hydraulic fitting Topa manufacturer

Agriculture

For agriculture, compression fittings are made of brass, stainless steel, or carbon steel. Topa offers all kinds of compression fittings.

hydraulic compression fitting house use Topa

Household

For household use, compression fittings are easy to install without any complicated operations.

Brass compression fittings China truck transportation

Automotive

For automotive, compression fittings are used in the brake line system, where most of the brass compression fittings strictly follow the DOT standard.

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Compression Fittings Features

Compression Connections Topa

Construction

Hydraulic compression fittings consist of several key components that work together to create a secure, leak-proof connection in hydraulic systems. The typical structure includes:

Fitting Body: The main part of the fitting that provides the base for all other components. It is usually made of brass, steel, or stainless steel for strength and durability.

Compression Nut: This part is threaded onto the fitting body, securing the tubing or hose. When tightened, it compresses the ferrule against the tube to form a tight seal.

Ferrule (Compression Sleeve): This is the metal ring that is compressed by the nut onto the tubing. It creates the seal and ensures a secure grip, preventing leaks.

Insert/Seal: Some fittings may also include an internal seal to enhance leak-proof performance, especially in high-pressure systems.

Material

Hydraulic compression fittings are made from high-quality materials to ensure durability, corrosion resistance, and optimal performance in demanding environments. 

Fitting Body:

The fitting body is made from materials like stainless steel or brass for high strength, corrosion resistance, and the ability to withstand high pressures.

Compression Nut:

The compression nut is typically made from brass or stainless steel to ensure secure fastening and long-term durability.

Ferrule:

The ferrule is made from materials like brass, copper, or stainless steel to ensure a tight, leak-proof seal when compressed onto the tube or hose.

Seals:

Rubber, PTFE (Teflon), Nitrile, Viton. Seals are used to enhance the leak-proof performance of the fitting. Depending on the application, different seal materials are chosen for their chemical resistance, heat tolerance, and flexibility.

Compression Brass Fitting Topa
Compression Fitting work

Working Principle

The working principle of compression fittings is based on the tight seal created between the ferrule and the tubing when the compression nut is tightened. Here’s how it works:

Initial Insertion: The tubing is inserted into the fitting body, with the ferrule placed over the tube.

Compression Process: As the compression nut is tightened, it pushes the ferrule against the tube. This compression causes the ferrule to grip the tube tightly, forming a reliable seal.

Leak Prevention: The compression action ensures that no fluid can escape around the connection. The tightness of the ferrule against the tube prevents leaks, even under high-pressure conditions.

Advantages of Compression Fittings

Compression fittings offer several benefits that make them highly suitable for a wide range of hydraulic and fluid applications. Here are the key advantages:

Leak-Proof Connection

Compression fittings are designed to create a tight seal between the tubing and the fitting. The compression nut tightens the ferrule against the tube, preventing leaks even under high pressure. This ensures a reliable, leak-free connection, which is crucial in hydraulic systems.

Ease of Installation

Compression fittings are simple to install and do not require special tools or welding equipment. The tubing is simply inserted into the fitting and tightened with a wrench or hand tool. This makes them cost-effective and convenient, reducing installation time and labor costs.

No Need for Flare or Welding

Unlike flare fittings that require precise tube ends or welded connections, compression fittings only need the tubing to be cut cleanly and inserted into the fitting body. This makes them versatile, allowing for quick assembly and disassembly, and is ideal for situations where welding or flaring is impractical.

Compatibility

Compression fittings are highly adaptable and can be used with various tubing materials, including copper, stainless steel, and plastic. This versatility makes them suitable for many different applications across industries such as automotive, industrial machinery, plumbing, and HVAC.

Durability

Compression fittings are typically made from durable materials like brass, stainless steel, or carbon steel, which are resistant to corrosion, wear, and high pressures. They offer long-term performance, even in demanding environments with fluctuating pressures and temperatures, making them a reliable choice for both permanent and temporary installations.

Reusability

Compression fittings can be disassembled, cleaned, and reassembled without significant wear to the components, allowing for reuse. This is an environmentally friendly and cost-effective option for systems that require frequent modifications or upgrades.

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For a limited time, we are offering a free consultation with our technical team. Let us help you optimize your hydraulic systems for maximum performance!

Hydraulic Compression Fitting Installation Tips

Proper installation of hydraulic compression fittings is crucial to ensure reliable, leak-free connections in hydraulic systems. Here are some key tips for a successful installation:

Prepare the Tubing Properly

Tip: Before installing the compression fitting, ensure that the tubing is cut cleanly and squarely. Use a tubing cutter for a smooth, straight cut. Avoid using a hacksaw, as it can cause burrs or rough edges that may compromise the seal.

Why: A clean, square cut allows for a better seal between the tubing and the fitting, preventing leaks.

cut copper tube
Deburr the Tubing Edges

Tip: After cutting the tube, always deburr the edges using a deburring tool or a reamer.

Why: Burrs or sharp edges can damage the ferrule or cause improper sealing, leading to leaks or poor connection quality.

Select the Right Compression Fitting

Tip: Choose the correct fitting type and size based on the tubing diameter and application requirements. Ensure the fitting material is compatible with the medium being transported (e.g., oil, gas, or water).

Why: Using the right size fitting ensures a secure connection and prevents leaks or fitting failures. Incorrectly sized fittings can result in improper compression and performance issues.

Ensure Proper Alignment of the Tubing

Tip: When inserting the tubing into the fitting, make sure the tube is fully inserted, with no gaps between the tube and the fitting body.

Why: Proper alignment ensures that the ferrule is evenly compressed, creating a leak-proof seal. Misalignment can lead to uneven compression and weak connections.

Tighten the Compression Nut Correctly

Tip: Tighten the compression nut by hand first, and then use a wrench to tighten it further. Avoid overtightening, as this can damage the fitting or tubing.

Why: Proper torque is essential for creating a secure seal. Overtightening can crush the tubing or compress the ferrule too much, while under-tightening may result in leaks.

Undo Compression Fitting
Inspect the Fitting After Installation

Tip: After installation, inspect the fitting to ensure it’s properly tightened and the tubing is securely held in place. Look for any signs of leakage or misalignment.

Why: An initial check helps to identify potential issues before the system is pressurized, preventing costly repairs and downtime.

Avoid Using Worn or Damaged Fittings

Tip: Always use new compression fittings, especially when the components are made of softer materials like brass. Reusing worn or damaged fittings can result in poor sealing and potential system failure.

Why: Worn fittings may not provide a proper seal, leading to leaks and reduced system efficiency.

Use Anti-Seize Lubricant (if applicable)

Tip: In some cases, apply a small amount of anti-seize lubricant or thread sealant on the threads of the compression nut to prevent galling or seizing over time.

Why: Lubrication helps prevent friction, making it easier to tighten the nut and ensuring smooth installation, especially in high-temperature or high-pressure applications.

Avoid Common Pitfalls

At Topa, we understand the challenges our customers face when selecting and installing hydraulic fittings. Many of our customers have encountered common pitfalls that can lead to system inefficiencies, leaks, or costly maintenance issues. We’ve identified key areas where mistakes are often made and want to highlight them so you can make informed decisions when selecting hydraulic fittings.

Single or Double Ferrules

Many customers will forget to select the number of ferrules at the time of purchase, resulting in a faulty product. A single ferrule will provide a slightly less tight fitting than a double ferrule.

Fitting Thread Compatibility

Incorrect matching of fitting threads such as BSP, NPT or JIC is a common problem. The use of incompatible threads can result in a poor seal, leading to leaks or system inefficiencies.

Branch Tee or Straight Tee

Confusion between branch tees and straight tees can lead to improper installation, especially when connecting multiple pipes. A branch tee is used to branch off a main line, while a straight through tee is used to extend a main line.

Material Selection Issues

Choosing the wrong material for hydraulic fittings is another common pitfall. Some customers choose materials that are not suitable for the operating conditions of the system, such as brass for high temperature environments or stainless steel for corrosive environments.

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For a limited time, we are offering a free consultation with our technical team. Let us help you optimize your hydraulic systems for maximum performance!
Choose Topa

Topa Services

At Topa, we pride ourselves on delivering tailored, high-quality hydraulic solutions designed to meet your specific needs. With over a decade of experience in hydraulic fittings and a dedication to customer satisfaction, we provide services that ensure your operations run efficiently and smoothly.

Custom Product Design

We offer customized hydraulic fittings, including size, material, and logo, to meet your exact requirements.

Quick Production Time

Our efficient production process ensures fast turnaround times, even for large orders.

Global Shipping

We provide reliable international shipping, ensuring your products reach you on time, wherever you are.

Technical Support

Our expert team offers in-depth technical support to guide you in selecting the right solutions for your systems.

Quality Assurance

Every product undergoes rigorous quality control to guarantee high performance and durability.

Flexible Payment Options

We offer a range of flexible payment terms and options to suit your business needs.

Ongoing Maintenance

We provide after-sales support and maintenance services to ensure the long-term reliability of your hydraulic systems.

Custom Packaging

Our packaging services are tailored to protect your products and meet your specific shipping requirements.

Your Reliable Compression Hydraulic Fitting Factory

Compression Hydraulic fitting CNC maching manufacturer

Compression fittings include flared, non-flared, and push-in types, each of which has its own unique advantages. Topa provides all types of compression fittings. You can click on the picture below for more details.

The advantages of compression fittings are significant and they are applicable in a wide range of fields, so they are very popular.

Firstly, compression fittings are easy to install and no special tools or sealants are needed. Secondly, after being correctly installed, compression fittings do not leak. Finally, compression fittings are convenient to maintain since they do not need to be completely removed.

Moreover, Topa strictly adheres to quality and safety standards in the manufacturing of hydraulic fittings, such as dimension, pressure grade, etc.

The most common threads used for compression fittings are metric and NPT. These threads have corresponding standards and Topa strictly follows these standards.

The materials’ of hydraulic compression fittings are the same as normal fittings, including brass, stainless steel, and most commonly carbon steel. Brass compression fittings have both ordinary compression fittings and DOT standard fittings.

Why Choose Us

Our company has a professional team with 20 years of experience in R&D, manufacturing, sales, and service. We can provide high-quality and better plastic pipe system solutions and services.

Our company adheres to the business philosophy of “good products, good service, good working platform” and is committed to becoming the leader of hydraulic products in China.

Quick Reply 

We will reply to your inquiry within 12 hours, by phone and Skype.

Free Sample Supply 

If you need samples, we can provide free samples for your peace of mind.

After-sales service             

For after-sales issues, we take care of them to ensure your satisfaction.

Customized Service             

We provide OEM/custom packaging service for our customers to provide the strongest support.

Compression hydraulic fittings China factory process

Quality Control

FAQ

What are compression fittings?

Compression fittings are fittings that connects pipes together by means of a nut and ferrule.

What are the advantages of compression hydraulic fittings?

No welding required; easy to install; easy to maintain; easy to operate.

How many parts are there in a compression hydraulic fitting?

A nut, a ferrule, and the body.

What kind of tubing can I use with compression fittings?

Nylon, plastic and copper pipes ot tubes.

What are the main applications of compression fittings?

Domestic, industrial, agricultural and automotive industries.

Why do compression fittings fail?

Too tight; damaged ferrules; worn or corroded fittings.

Can ferrules be reused?

No, we recommend replacing the ferrule with a new one.

What are the types of compression hydraulic fittings?

Compression fittings are single sleeve, double sleeve, elbow, tee, and union fittings.

Can compression fittings be tightened very tightly?

No, if the nut is tightened too much, the ferrule will be damaged.

What types of brass compression fittings are available?

Common brass compression fittings and bass DOT standard fittings.

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