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Conval offers Clampseal Cryogenic Valves for high-pressure, low-temperature liquified natural gas (LNG), manufacturing, 
heat treating and vaporizing applications to -420F. The valves are available in 1/2" through 4" sizes with socket weld, butt weld or special ends and pressure ratings in ASME class through 2500#, ASME B31.3, ASMEB16.34 and MSS SP-84. The valves come standard in forged stainless steel SA 182 F316 with special pressure classes and materials available. The units include a metal-to-metal pressure seal bonnet, solid Stellite seating surfaces, single-piece gland, in-line servicing and two-year warranty.
Conval