Lianhe Valve is a leading manufacturer of high-quality ball valves. Our stainless steel D type crimped female thread ball valves provide reliable performance for a variety of piping systems. We offer custom options to meet specific needs, ensuring our products provide optimal flow control and satisfaction in a wide range of applications.
The High-Reliability Stainless Steel D-Type Press Female Thread Ball Valve is a durable flow control solution designed for press-fit and threaded piping systems, combining the speed of press connections with the versatility of female NPT threads. Constructed from 304 or 316 stainless steel, this valve features a press-fit female end and a threaded outlet, enabling fast installation in commercial and industrial environments.
Dual Connection Technology:
Press-fit female end (ISO 6122 compliant) for quick, tool-free connection to stainless steel or copper pipes (OD: 15mm-54mm), creating a permanent joint in 3 seconds.
Female NPT thread (ANSI B1.20.1) on the opposite end for compatibility with threaded valves, gauges, or accessories, reducing the need for adapters.
Robust Material Construction:
304 stainless steel (general use) or 316 stainless steel (corrosive media), with a yield strength of 205 MPa and elongation ≥40% for impact resistance.
PTFE seat provides bubble-tight shutoff (API 598) up to 16 bar (232 PSI), with a polished ball ensuring low operating torque (≤12 N·m for 2" valves).
Installation Flexibility:
Suitable for both new installations and retrofitting, with press-fit technology ideal for tight spaces where welding or threading is impractical.
Temperature range: -20°C to 180°C (PTFE seat); -40°C to 260°C (RPTFE seat), adaptable to hot water, oil, and compressed air systems.
Compliance & Certification:
Meet EN 10226-1 and NSF/ANSI 61 standards, with material traceability reports available for potable water and industrial applications.
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.
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 historic buildings with limited access for traditional installation methods.
Laboratory Equipment: Connecting PEX tubing to threaded chemical injectors and filters in research facilities, with 316 stainless steel resisting mild chemical exposure.
Q: What pipe materials are compatible with the press-fit end?
A: Compatible with stainless steel (EN 10217-7), copper (EN 1057), and PEX (EN 12201) pipes with matching outside diameters.
Q: Can the press-fit end be used with rigid plastic pipes?
A: No, press-fit is designed for metal pipes; use a transition fitting for plastic pipes (e.g., PEX-to-thread adapter).
Q: How to ensure a proper press connection with the female end?
A: Use a hydraulic press tool with ISO 15874-6 compliant dies, checking for a uniform indentation on the press ring after installation.
Q: Is the valve suitable for underground installations?
A: Yes, but protect the threaded end with anti-corrosion tape and use a valve box for easy access in buried pipelines.
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Building 2, No.3991, Binhai 3 Road, Wenzhou Economic Technological Development
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