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ReflowX SKU: REF-0143
The JH Main Steam Gate Valve is a robust, heavy-duty gate valve specifically designed for main steam lines and high-temperature, high-pressure process systems. It is equipped with a pressure self-tightening seal in the valve cavity that enhances sealing performance as internal pressure increases. This results in a safer and more reliable shutoff, especially critical in power generation and high-pressure steam environments.
The sealing surfaces of the gate and valve seat are hardfaced with cobalt-based alloy, ensuring excellent resistance to wear, corrosion, scratching, and high temperatures. The valve stem is tempered and surface-nitrided, providing superior strength, anti-friction, and corrosion resistance.
This valve includes an inverted sealing structure, allowing stem packing replacement while ensuring zero external leakage during operation. Designed to meet stringent industry codes, it delivers long-term reliability, extended maintenance intervals, and optimal safety.
– Valve Type: Pressure-Sealed Bonnet Gate Valve
– Size Range: NPS 2″ to 24″ (DN50 to DN600)
– Pressure Rating: Class 600 to Class 2500 / PN100 to PN420
– Temperature Rating: Suitable for high-temperature steam service
– Design Standards: ASME B16.34, NB/T 47044, JB/T 3595
– Face-to-Face: Per ASME/Chinese national standards
– End Connection: Flanged (RF/RTJ), Butt Weld (BW)
– Body Material: WCB, WC6, WC9, or equivalent high-temp steels
– Gate & Seat: Cobalt-based hard alloy overlay (Stellite or equivalent)
– Stem: Tempered and surface-nitrided stainless steel
– Bonnet Seal: Pressure self-tightening seal (cone-ring)
– Stem Packing: Replaceable, inverted seal structure
– Sealing Design: Metal-to-metal, high-integrity shutoff
– Operation: Handwheel, Gearbox, Electric, Pneumatic, or Hydraulic Actuator
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