Capability. Fire-safe design is mandatory for LNG facilities preventing catastrophic releases during fire emergencies. Pressure ratings for API 6D LNG valves range from Class 150 (285 psi) to Class 2500 (6,170 psi) with seals designed for each rating. Higher pressure classes require more robust seal designs and materials. Seat seal loading must overcome system pressure maintaining co... https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/