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Stainless Steel Compression Tube Fittings

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We are a leading and professional manufacturer for all kind of ball valves. Our main products include Sanitary Tri Clamp 3 Piece Ball Valve, brass mini ball valve, Brass Shut Off Ball Valve With Mini Check Valve, Lead Free Brass Shut Off Mini Ball Valve, brass angle tube ball valve, brass double ferrule ball vlave, SS panel mounted ball valve, instrument female angle ball valve, Instrument panel mounted ball valve, Three Piece Extension Tube Butt Welded Ball Valve, Three Piece Ball Valve, One Piece Ball Valve, etc.

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Customization

Our company accept all kind of customized products that you just need to offer drawing or samples. if you don't have drawing, we can make it for you. And we can send you samples for check quality.

Factory

Wenzhou Huancheng Pipeline Valve Co., Ltd (Huancheng) founded in1996,China .We are a leading and professional manufacturer for all kind of ball valves.

Quality Control

Huancheng is devoted to being a world-class supplier for submit to international markets all types of valves in an extensive wide range of material, sizes and pressure classes for various industry sectors like Petrochemical, Oil and Gas, Petroleum refinery,Metallurgy, Energy, Water and Sewage lines, Food, Pharmacy, electric appliance,car, Power station and Ship building

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Our professional team collaborate and communicate effectively with one another, and are committed to delivering high-quality results. They are capable of handling complex challenges and projects that require their specialized expertise and experience.

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What is Stainless Steel Compression Tube Fittings？

Stainless steel compression tube fittings solutions are suitable for a wide variety of industrial applications, ranging from low to high working pressures and temperatures. Without the need for tube preparation, flaring or welding, our range of Stainless steel compression tube fittings s provides safe, tight, leak-proof connections as well as maximum convenience. Manufactured to the highest quality standards, these compression fittings feature hardened and corrosion-resistant ferrules for optimum performance. Available in a broad range of diameters, shapes and threads, this range of Stainless steel compression tube fittings s, in combination with stainless steel adaptors, offers a perfect fit to the installation, the ability to connect a wide variety of metal or polymer tubing and is suitable for a wide range of industrial fluids in many markets.

Benefits of Stainless Steel Compression Tube Fittings

01/

They are not the same as threaded fittings
Even though threaded and compression fittings use threads to connect pipes, they use them differently. Threaded fittings have a 1-piece connection end that connects to the port or block. Teflon tape or pipe dope are generally utilised as sealing agents.

02/

Compression fittings are versatile
Compression fittings are available in various sizes, configurations, and materials to connect various components. This makes them suitable for a wide range of applications in the plumbing, automotive, manufacturing, and construction industries.

03/

Tighter is not always better
While assembling compression fittings, tighter is not always better. In such fittings, the optimal seal is created by line contact between the ferrule and tubing. Insufficient tightening of the nut will not deform the ferrule enough to create the contact, but over-tightening will deform the ferrule too much, leading to surface contact, which can weaken the seal and cause leaks.

04/

Compression fittings are reusable
Stainless steel tube connectors offer great economic benefits. Unlike other types of fittings that require replacement after disassembly, they can be reused multiple times without compromising their performance. This makes them highly cost-effective for situations where frequent adjustments or modifications are necessary.

Choosing the Right Stainless Steel Compression Tube Fittings

Shape Is Everything
Pay close attention to the ferrule’s shape and the fitting body’s mating angle. They’ve both got to be tapered to allow proper compression when the screw or nut is tightened. And don’t forget: Axial alignment with the tubing has to be maintained at the same time. Those relative angles will determine the amount of linear motion turned into radial compression as well as the amount of surface contact you’ll get with the tubing. A line contact or uniform compression around the entire ferrule – Will deliver the best seal. Pro tip: you’ll also want to make sure your ferrule has a sharp forward edge.

By the Numbers
In most, basic compression fittings, you’ll find just one ferrule. In softer fabrications, this keeps things simple with fewer components. When you move up to a stainless steel tube fitting, you’ll find that torque is transferred to the ferrule as you tighten the screw. Over time, that rotation can make the ferrule shift, produce galling, and cause long-term leaks. Put another freely rotating rear ferrule into the mix, and you’ll see the nut decoupled from the front – Meaning a prevention of torque transfer.

A Question of Symmetry
When looking at one-piece ferrules, you’ll see asymmetrical and symmetrical options. The cone-shaped asymmetrical ferrule can only go into the fitting body in one direction while symmetrical versions resemble two back-to-back cones. The latter can go into the fitting in both directions, making your assembly just a little bit easier when it comes to applications with a lot of fittings, and rapid required assembly time.

What’s not to love about symmetrical ferrules? They tend to drift off-axis, and that can cause small leaks. The problem’s amplified when you’re working with hard plastic tubing. That’s why asymmetrical ferrules, which give you the flexibility of a two-piece design, are generally the way to go with tech-forward applications.

PTFE Tubing
Also known as Teflon tubing, it offers a high degree of resistance to most chemicals, stands up to high pressure, is low out-gassing, and delivers better flexibility than metal. And this problem gets worse when the tubing then hits high temperatures. You can meet this problem head-on by utilizing a redundant seal (like an o-ring) in the fitting body, creating a radial seal against outside diameter.

Metal Tubing
How it’s produced can make all the difference in the way it performs. You’ll want to use smooth tubing (no roughness that can cause a leak path) that’s been stored in coils, preventing even compression. Pro tip: An elastomeric seal can deform to match variations, but a metal-to-metal seal is less adaptable. Be sure that each section is cut squarely to allow the tubing to rest symmetrically in the body of the fitting.

Types of Stainless steel compression tube fittings

Stainless steel compression tube fittings are designed to create a secure and leak-free connection between the pipes, even in high-pressure applications. Compression fittings use a compression ring or ferrule to compress and seal the connection between the pipes. This ensures the connection remains tight, even under pressure, and prevents leaks or other failures.

Single Ferrule Compression Fittings

These fittings consist of a single ferrule that compresses onto the tube or pipe, creating a seal. They are easy to install and provide a tight seal, making them suitable for high-pressure applications.

Double Ferrule Compression Fittings

These fittings have two ferrules, one that compresses onto the tube or pipe and the other that seals against the fitting body. They offer a leak-tight seal and can handle high-pressure applications.

Flareless Compression Fittings

These fittings use a compression sleeve to create a seal between the tube or pipe and the fitting body. They are easy to install and provide a leak-tight seal, making them suitable for high-pressure and vibration-prone applications.

Instrumentation Compression Fittings

These fittings are specifically designed for use in instrumentation and control applications. They have a precision machined surface finish and provide a leak-tight seal, ensuring accuracy and reliability.

Griplok Compression Fittings

These fittings use a unique grip and seal design that provides a secure, leak-tight seal without requiring special tools or training. They are easy to install and offer high resistance to vibration and pressure variations.

Push-in Compression Fittings

These fittings are designed for pneumatic applications and feature a push-in design for easy installation. They provide a secure, leak-tight seal and can handle high-pressure and temperature variations.

Application of Stainless Steel Compression Tube Fittings

Compression Fittings: Compression fittings are also ideal for connecting gas lines. Brass fittings are often used when running low pressures above ground. If using PTFE tape, ensure it’s rated for gas grade connections. Additionally, in the event of leaks, many gas line compression fittings must be accessible and not hidden behind walls, under floors or underground. They must be easy to reach, in case maintenance is required. A good example is running compressed natural gas (CNG) tube lines.

Chemical Processing: Due to the media being transferred and the conversion processes in the chemical industry, instrumentation fittings must be stable, highly corrosion resistant and able to withstand wide temperature ranges. From sampling to production processes, instrumentation fittings play a critical role in the chemical industry.

Oil & Gas: Instrumentation compression fittings are used for upstream and downstream applications. They are used heavily in oilfield logging and other exploration. Tube fittings made of stainless steel and the other exotic alloys mentioned above are prevalent on offshore oil rigs, especially in harsh conditions such as the North Sea. Another application is the use of bulkhead instrumentation fittings to connect tubing lines to gages and valves in instrument panels and on skids in oil & gas applications.

Medical & Pharmaceutical: Medical device equipment and pharmaceutical production are highly dependent on instrumentation components. They are used in life monitoring devices, surgical equipment and the processing of chemical compounds used in pharmaceutical production.

Power Generation: Compression fittings allow for leak free connections in process, power, nuclear and other critical power generating applications.

Grades of Stainless Steel

Austenitic Stainless Steel (300 Series)
●Grade 304: Also known as 18/8 stainless steel, it contains 18% chromium and 8% nickel. Due to its excellent corrosion resistance, formability, and weldability, Grade 304 is the most common stainless steel grade used in various applications such as food processing, kitchen equipment, and architectural purposes.

●Grade 316: Contains 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. Grade 316 offers superior corrosion resistance, especially in chloride environments, making it suitable for marine applications, chemical processing, and medical devices.

Ferritic Stainless Steel (400 Series)
●Grade 430: Comprising 16-18% chromium, Grade 430 stainless steel is magnetic and has good corrosion resistance in mildly corrosive environments. It finds applications in automotive trim, appliances, and architectural elements.

Martensitic Stainless Steel
●Grade 410: This grade contains 11.5-13.5% chromium and exhibits high strength, hardness, and wear resistance. It is used in applications requiring moderate corrosion resistance combined with good mechanical properties, such as valves, pump shafts, and surgical instruments.

Duplex Stainless Steel
●Grade 2205: This is a duplex stainless steel containing approximately equal proportions of austenite and ferrite phases. It offers higher strength and better corrosion resistance than austenitic grades, making it suitable for chemical processing, oil and gas, and marine applications.

Precipitation Hardening Stainless Steel
●Grade 17-4 PH: Known for its high strength and excellent corrosion resistance, Grade 17-4 PH can be heat-treated to achieve various strength levels. It is used in aerospace components, nuclear reactors, and high-strength structural applications.

Factors to Consider When Choosing Stainless steel compression tube fittings

Corrosion Resistance

Ensure the grade you select is resistant to the type of corrosion specific to your application. For example, if the pipe is exposed to saltwater, 316 stainless steel is better than 304.

Strength and Durability

Consider mechanical properties like tensile strength and hardness. Seamless Stainless steel compression tube fittings are often recommended for high-pressure systems.

Cost

Different stainless steel grades have various price points. Grade 304 is more affordable but may offer less specialized properties than 316 or 321 in demanding environments.

Compatibility with Fluids

Ensure that the stainless steel grade you choose is compatible with the fluid it will carry. Chemicals, gases, and liquids may react differently with various grades.

Our Factory

Wenzhou Huancheng Pipeline Valve Co., Ltd (Huancheng) founded in1996,China .Huancheng is devoted to being a world-class supplier for submit to international markets all types of valves in an extensive wide range of material, sizes and pressure classes for various industry sectors like Petrochemical, Oil and Gas, Petroleum refinery,Metallurgy, Energy, Water and Sewage lines, Food, Pharmacy, electric appliance,car, Power station and Ship building

FAQ

Q: What are Stainless Steel Compression Tube Fittings used for?

A: These fittings are widely used in various industrial settings, including petrochemical plants, oil refineries, and food processing facilities, for connecting tubes securely under high pressure and vacuum conditions. They also find applications in instrumentation and hydraulic systems.

Q: How do Stainless Steel Compression Tube Fittings work?

A: They consist of three main components: The nut, the compression ring (ferrule), and the body. When tightened, the nut presses the ferrule against the tube, creating a tight seal through deformation of the ferrule onto the tube's outer surface.

Q: Why Choose Stainless Steel for Compression Tube Fittings?

A: Stainless steel provides exceptional strength, corrosion resistance, and durability, making it suitable for harsh environments. It maintains its integrity even when exposed to corrosive fluids and high temperatures, which is crucial for maintaining safe and reliable connections.

Q: What Grades of Stainless Steel Are Best for Compression Tube Fittings?

A: Typically, 304 and 316 grades are preferred. Grade 304 is good for general purposes, whereas 316 has higher corrosion resistance, especially in marine or chemically aggressive environments.

Q: Can Stainless Steel Compression Fittings Be Used with Both Metal and Plastic Tubes?

A: Most stainless steel compression fittings are designed for metal tubes but some models are compatible with plastic tubes. It's important to select the right fitting according to the tube material and operating conditions specified by the manufacturer.

Q: What is the reason for using stainless steel pipe?

A: Stainless steel pipe resists oxidation, making it a low-maintenance solution that is suitable for high temperature and chemical applications. Because it is easily cleaned and sanitized, stainless steel pipe is also desired for applications involving food, beverages, and pharmaceutical applications.

Q: Is stainless steel tube stronger than mild steel tube?

A: In terms of raw strength, stainless steel generally comes out on top of mild steel. This is mainly because of the presence of chromium. The chromium in stainless steel reacts with oxygen, forming a thin, protective layer of chromium oxide on the surface.

Q: Why use stainless steel fittings?

A: Stainless steel fittings are an essential component of any piping system. They are used to connect pipes and tubes, control the flow of fluids, and regulate pressure. These fittings are highly durable, corrosion-resistant, and can withstand high temperatures and pressures.

Q: What is stainless steel tubing used for?

A: Stainless steel tubes play a crucial role in the construction industry and are extensively used in building structures, bridges, and infrastructure. Their resilience against extreme weather conditions, corrosion resistance, and ability to withstand heavy loads make them an ideal choice for such applications.

Q: Can I Use Teflon Tape on Stainless Steel Compression Tube Fittings?

A: No, Teflon tape should not be used because it can get squeezed into the tube during tightening, leading to blockages or damaging the instrument. Instead, rely on the precision design of the fitting to create a leak-proof seal.

Q: What is stainless steel pipe fitting?

A: Stainless steel pipe fittings are widely used in various industrial and commercial applications. They come in different sizes and types and are designed to connect pipes of different diameters and shapes. Stainless steel is a durable and corrosion-resistant material, which is ideal for harsh environments.

Q: Are Stainless Steel Compression Fittings Reusable?

A: Generally, once tightened, the ferrules become permanently deformed to form a seal. Reuse is possible if the ferrules aren’t visibly damaged, but best practice suggests replacing them upon each disassembly to ensure a secure connection.

Q: What Should I Do If My Stainless Steel Compression Fitting Leaks?

A: First, make sure the fitting is fully tightened. If leakage persists, check for damage to the tube end or the ferrule. Replacing the fitting or the tube section is typically necessary if either component is compromised.

Q: How Does Temperature Affect Stainless Steel Compression Tube Fittings?

A: Stainless steel can maintain structural integrity across a wide temperature range. However, always confirm the fitting's temperature rating to avoid thermal expansion issues or material weakening at high temperatures.

Q: Are There Any Special Considerations When Installing Stainless Steel Compression Tube Fittings in Chemical Processing Environments?

A: Yes, ensure that the stainless steel grade is compatible with the chemicals being processed to avoid corrosion. Also, consider the potential for chemical reactions at elevated temperatures and pressures.

Q: Can you use compression fittings on stainless steel tubing?

A: It is important to bear in mind that brass compression fittings are better suited to use with copper tubing, and that stainless steel fittings are used for stainless steel tubing. If you do try to use a brass fitting with stainless steel tubing, you will struggle to obtain a proper seal.

Q: Should Stainless Steel Compression Tube Fittings Be Lubricated During Installation?

A: Lubricating the threads before tightening the nut can help prevent galling. However, avoid applying lubricants directly onto the sealing faces as this can interfere with the formation of a gas-tight seal.

We're professional stainless steel compression tube fittings manufacturers and suppliers in China, specialized in providing high quality products with low price. We warmly welcome you to wholesale stainless steel compression tube fittings in stock here from our factory. For customized service, contact us now.

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