The S-Type Stainless Steel Female Thread Press Coupling is a versatile pipe fitting designed to connect press-fit pipes to threaded components, combining the speed of press connections with the flexibility of threaded interfaces. Constructed from 304 stainless steel, this coupling features a press-fit female end and a male NPT thread, enabling quick, tool-free installation in commercial and industrial piping systems.
Dual Connection Design:
Press-fit female end (ISO 6122 compliant) for seamless integration with press-fit pipes (stainless steel, copper, PEX), creating a permanent, leak-free joint in seconds.
Male NPT thread (ANSI B1.20.1) for connecting to valves, meters, or other threaded accessories, eliminating the need for adapters or reducers.
High-Quality Materials:
304 stainless steel (18Cr-8Ni) offers excellent resistance to general corrosion, with a passivated surface to enhance protection in humid environments.
Reinforced neck at the thread-to-press transition for improved tensile strength (≥500 MPa), preventing stress cracking during pressure surges.
User-Friendly Installation:
Press connection requires only a hydraulic press tool, with visual indicators (deformation of the press ring) to confirm proper seating.
Threads pre-coated with anti-seize compound for easy assembly, reducing installation time by 30% compared to traditional threaded couplings.
Performance Specifications:
Pressure rating: 16 bar (232 PSI) at 20°C for press-fit end; 25 bar (363 PSI) for threaded end, with temperature range -20°C to 150°C.
Leak test: 1.1x working pressure for 10 minutes, meeting EN 10226-1 standards for press-fit connections.
Ideal for hybrid piping systems requiring mixed connections:
Commercial Plumbing: Connecting press-fit stainless steel pipes to threaded water meters and control valves in high-rise buildings, compliant with NSF 61 for potable water.
Industrial Hydraulics: Linking press-fit tubing to threaded hydraulic pumps and cylinders in machinery, reducing downtime during equipment maintenance.
Renovation Projects: Upgrading old threaded systems to modern press-fit pipes, especially in tight spaces where welding or threading is impractical.
Laboratory Equipment: Connecting PEX tubing to threaded chemical injectors and filters in research facilities, with 304 stainless steel resisting mild chemical exposure.
Q: Can the press-fit end be used with plastic pipes?
A: Yes, compatible with PEX and PB plastic pipes with the correct outside diameter (OD) matching the press fitting size.
Q: What happens if the press connection is not fully seated?
A: A visible gap between the coupling and pipe indicates improper seating; re-press or replace the coupling to ensure a secure joint.
Q: Is the NPT thread compatible with metric threads?
A: No, NPT is an imperial thread; use a metric-to-NPT adapter for compatibility with ISO 7-1 threads.
Q: How to remove a press-fit coupling for repair?
A: Use a special removal tool to expand the press ring, though replacement is recommended as disassembly may damage the pipe.
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Building 2, No.3991, Binhai 3 Road, Wenzhou Economic Technological Development
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