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Stainless Steel Fitting
S Type Stainless Steel Female Thread Press Coupling
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S Type Stainless Steel Female Thread Press Coupling

Lianhe Valve is a leading manufacturer of high-quality plumbing fittings, specializing in durable and reliable couplings. Our S-type stainless steel female threaded compression fittings are designed to meet a variety of plumbing needs across a wide range of industries. Contact us today to learn more!
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S-type stainless steel female threaded compression fitting is a durable and corrosion-resistant pipe fitting. It is designed for secure and leak-free connections in various piping systems.


This fitting supports NPT and BSP (BSPP, BSPT) threads, ensuring compatibility with different pipes. It is available in sizes from 1/4 inch to 4 inch (DN10 to DN100) and can withstand PN16 pressure rating.


Made of SS304, SS316, SS304L and SS316L, it has excellent strength and service life. Various sealing materials such as CIIR, EPDM and PTFE enhance its performance in different applications.


This product is widely used in pipeline, HVAC, oil and gas, and industrial water systems. It complies with ISO9001:2015, CE and GB/T19001-2016 certification standards.


As a trusted manufacturer and supplier, we provide wholesale and customized solutions to meet specific project needs. Bulk orders are acceptable, and flexible customization options are available.


Parameters Table


Parameter Value
Size Range 1/4” ~ 4” (DN10 ~ DN100)
Thickness 0.6 ~ 2MM
Standards GB/T19228.2-2011, CJ/T 152-2016, CJ/T466-2014, EN, DIN, ASME
Materials 0Cr18Ni9 SS304, SS316, SS304L, SS316L
Seal Material CIIR, EPDM, PTFE, Acrylic
Socket End Type D-type, S-type
Thread Type NPT, BSP (BSPP, BSPT)
Nominal Pressure PN16
Water Pressure Test 2.5MPa
Gas Tightness Test 1.05MPa
Process Pipe - Mechanical Forming
Surface Treatment Vibration Polishing, Magnetic Polishing, Acid Washing
Marking LOGO-OD-W.T-Material (Customizable upon request)
Packaging Plastic Bag + Carton + Wooden Box
Certifications ISO9001:2015, CE, GB/T19001-2016, Sanitation License
Working Medium Potable Water, Wastewater, Industrial Water, Oil, Natural Gas
Temperature Range for Seals -20℃ ~ 110℃



Features of  S Type Stainless Steel  Female Thread Press Coupling



Material: Made of high-quality stainless steel, it has excellent corrosion resistance and durability.


Internal thread design: It adopts internal thread connection, which is easy to install, with a secure seal and no leaks.


High-pressure resistant: It is suitable for high-pressure systems without compromising strength or performance.


Versatile compatibility: The design fits a variety of pipe sizes, making it a versatile solution for multiple pipe applications.


Easy to install: The press-fit technology ensures a quick and easy installation process, reducing labor costs and installation time.


Corrosion-resistant: It is ideal for use in harsh environments, such as industrial or outdoor applications where corrosion is a concern.


Custom options available: We offer custom sizes and thread options to meet the needs of specific projects.



Advantages of S Type Stainless Steel  Female Thread Press Coupling



Long-lasting and durable: The solid stainless steel construction ensures that the fittings will remain functional for many years even in challenging environments.


Leak-proof performance: The precise internal thread and press-fit fitting design eliminates the risk of leaks and ensures reliable performance.


Quick and efficient installation: The press-fit design eliminates the need for welding, soldering or additional sealing materials, saving time and costs.


Cost-effective: Our stainless steel fittings offer quality products at competitive prices for wholesale buyers, making them an economical choice for large projects.


Environmental benefits: Stainless steel is 100% recyclable, making these fittings an eco-friendly choice for sustainable projects.



Applications of S Type Stainless Steel  Female Thread Press Coupling



Stainless steel female compression fittings are commonly used in the following industries and applications:


Plumbing systems: Ideal for connecting water and gas pipes in residential, commercial, and industrial plumbing systems.


HVAC systems: Ideal for heating, ventilation, and air conditioning systems that require reliability and durability.


Construction projects: Ideal for large-scale construction and infrastructure projects that require high-quality, long-lasting piping solutions.


Oil and gas: Provides reliable connections in oil and gas pipelines, where high corrosion and pressure resistance are critical.



FAQs of S Type Stainless Steel  Female Thread Press Coupling



1. What is an S-thread compression fitting?


A threaded compression fitting is a fitting used to connect two pipes with a female threaded connection. The compression feature allows for quick and easy installation without the need for additional welding or brazing.


2. Can S-thread compression fittings be used in high-pressure systems?


Yes, stainless steel female compression fittings are designed to withstand high-pressure applications and are ideal for residential and industrial systems.


3. How do I install an S-thread compression fitting?


Installation is quick and easy. The compression design requires no welding or brazing. Simply insert the pipe into the fitting and press to secure it in place.


4. Are S-thread compression fittings available in custom sizes?


Yes, we offer custom sizes and thread options to meet your specific requirements. Please contact us for more details.


5. Can I use S-thread compression fittings for gas lines?


Of course you can. Suitable for both water and gas lines, stainless steel female compression fittings are a versatile solution for a wide range of applications.


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