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Bellows Seal Type Globe Valve
BELLOWS SEAL TYPE 2-WAY & 3-WAY GLOBE VALVE
Wasted material, employee safety, environmental concerns all good reasons for today’s plant operator to be concerned about fugitive emissions from hazardous processes.
To stop packing leakage from control valves.
Using a formed a formed metal bellows design with minimal welded joint, the design of PROVAL bellows has a full-cycles lift up to 5 a hundred thousands cycles.
This ensures years of safe and reliable operation in hazardous process ranging from -160°C(-230°F) ~ 350°C (688°F) and pressure to 40(kgf/cm²).
A metal should envelopes the bellows acting as a pressure boundary in service, allowing use of a single, pressurized gasket seal and preventing fluid contact with the bellows housing during normal operation.
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Leakage stem & seal.
· Available with SUS316 or SUS316L bellows.
· No bellows tension
Bellows is in a relaxed state at valve’s closed position.
· No bellows erosion / fluid impingement
Bellows is out of flow stream.
· No special packing requirements
Uses standard PROVAL V-PTFE packing materials.
· Multiple temperature applications
Temperature range from -160°C ~ 350°C.
YAD-12214 (RA Type), YAD-22214 (DA Type)
YAD-12284 (RA Type), YAD-22284 (DA Type)
Diaphragm or cylinder actuator operated bellows seal type globe valve.