Bellow seal valves are compact valve with up to 10,000 cycles lifetime recommended for steam, thermic fluid [santotherm, dowtherm, hytherm, marlotherm, thermia and dyphil] hydrogen and vacuum. These seal valves are available with zero stem leakage design eliminating product loss and hazardous circumstances. The company also provides welded/bolted bonnets in straight type forged design for application for cast valves. The company provides stellited hard faced seating surface as optional feature.
Technical specifications:
Valve design: bs 5352/bs1873/ansi b16.34
Valve test: api 598/bs 5146/ din 3230
Socket weld: ansi b16.11
Butt weld: ansi b16.25
Screw: ansi b1.20.1
End-to-end as per ansi b16.10/specifications
Vacuum-atmosphere: 1 x 10-6 torr
Vacuum-across seat: 1 x 10-3 torr
