Structural Characteristics of

• Specifically engineered for LNG or liquid nitrogen environments, the extended stem prevents the transfer of extreme cold from the valve body to the handwheel and packing. This ensures the packing remains at ambient temperature to prevent freezing, safeguarding operational integrity and personnel safety.

• Utilizing A182 F304/F316 forgings, this valve offers superior impact toughness compared to cast parts. When handling liquid oxygen or ethylene, it effectively resists cryogenic embrittlement caused by thermal shock, eliminating the risk of body fracture in critical storage systems.

• For volatile liquid cryogenic media, the internal design includes a pressure-relief mechanism. If trapped liquid vaporizes and causes abnormal pressure buildup in the cavity, it automatically releases pressure back to the upstream line, preventing valve damage or pipeline rupture.

•  Featuring precision-ground stems and high-performance packing compliant with API 624, this valve excels in handling high-purity industrial gases or chemical refrigerants. The design minimizes fugitive emissions of hazardous or costly gases, meeting the most stringent environmental standards.

• The Class 300 flanged connection provides immense mechanical strength, tailored for petrochemical cold-box skids and air separation units. Even under frequent thermal cycling, bolt pre-load remains stable, ensuring long-term joint integrity and facilitating modular installation.

• The wedge and seats are super-finished to achieve “bubble-tight” shut-off in semiconductor high-purity lines or lab cryogenic systems. This ultimate isolation performance prevents cross-contamination and ensures zero-loss management of expensive cryogenic fluids.

Main Components Material

Class 150LB Main Connection Dimensions

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