Stainless Steel 231 Series - 400 PSIG
A rugged construction and easy access are design features which provide minimum installation and maintenance cost while maintaining superior performance and operator safety. This valve replaces higher cost bellows-seated valves in many applications. The proprietary Goddard GRAFOIL® stem packing system provides excellent performance when the valve operates in liquid hydrogen service.
Features:
• Top Entry: Rugged stainless steel * soft seated cryogenic globe valve. This valve can be permanently installed in the line and serviced from the top
• Soft Seated: PCTFE Seat provides a bubble tight seal and is replaceable
• Construction: One piece investment cast bonnet eliminates welded joint in topworks
• Stem Packing: Proprietary Goddard system utilizing GRAFOIL® flexible graphite
• Sizes: ¼” through 1½” (6mm through 40mm)
• Ends: Socket weld, Butt weld
• Service: Liquified and Gaseous hydrogen service only (see series 232 for non-hydrogen service)
• Temperature Rating: -425°F to 150°F (-254°C to +65°C)
• Pressure Rating: (Cold, Non-shock) 300 PSIG (20 Bar) 400 PSIG (27 Bar)
*Stainless steel ASTM A351-CF3M (316L)
PED Approved, Approved for US and Canada
Designed to ASME B16.34
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