API 6D ball valves for LNG peak shaving plants use compact trunnion designs. LNG seals feature hybrid polymer-metal construction with PEEK primary and graphite backup. The seat spring uses wave spring design reducing height by 40%. Valves incorporate smart positioners with HART protocol for partial stroke testing. Cryogenic grease uses PFPE base oil retaining viscosity at -200°C. Valv... https://globalsealstech.com/product-category/oil-gas-seals/api-6d-ball-valve-and-lng-seals/