The Pipeline and Hazardous Materials Safety Administration (PHMSA) regulates LNG facilities under 49 CFR Part 193, establishing detailed requirements for facility siting, design, construction, testing, operations, maintenance, and emergency preparedness including specific provisions affecting valve reliability and performance standards. International standards including ISO 21011 for ... https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/