JH 3"–48" Cryogenic Triple Offset Butterfly Valve – Class 150–2500

The JH Cryogenic Butterfly Valve is a high-performance triple-offset valve engineered for low-temperature applications including LNG, air separation, and liquefied gas systems. Available in sizes ranging from 3 inches to 48 inches (DN80 to DN1200), with pressure ratings from Class 150 to Class 2500 (PN16 to PN420), this valve meets international standards such as API 609, ASME B16.34, GB/T 12238, and JB/T 8527. The valve features a cryogenic-ready extended neck and drip plate design to ensure reliable stem packing performance in temperatures below -40 °C. The sealing surfaces are overlaid with cobalt-based hard alloy for superior resistance to wear, scratches, and thermal cycling. The valve includes an anti-blowout stem and fire-safe sealing features, making it ideal for critical cryogenic service in LNG terminals, petrochemical plants, and industrial gas pipelines.

Specifications:

– Valve Type: Triple Offset Cryogenic Butterfly Valve
– Size Range: 3" to 48" (DN80 to DN1200)
– Pressure Class: CL150 to CL2500 / PN16 to PN420
– Body Design: Extended neck with drip plate
– Disc & Seat Material: Cobalt-based hard alloy overlay
– Operation: Manual, pneumatic, electric, or hydraulic
– Stem Design: Anti-blowout with fire-safe seal
– Flow Control: Bi-directional
– Design Standards: API 609, ASME B16.34, MESC SPE 77/200, GB/T 12238, JB/T 8527, GB/T 24925
– End Connection: Flanged (RF, RTJ), BW, SW
– Face-to-Face: As per API 609 / GB standards
– Suitable Media: LNG, liquid oxygen, liquid nitrogen, liquefied petroleum gas, cryogenic hydrocarbons
– Temperature Range: Cryogenic (typically below -40 °C)
– Special Features: Fire-safe design, extended bonnet, wear-resistant seating

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