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Bellows Seal Gate Valve

Bellows Seal Gate Valve

Bellows Seal Gate Valve Manufacturer in Canada, DN15–DN600, Class 150–2500, with welded metal bellows, rising stem and secondary packing.

Category:

A Bellows Seal Gate Valve Manufacturer in Canada, Valves Only Canada supplies gate valves with welded metal bellows that form a metallic barrier between the process fluid and the stem sealing area. The bellows contain stem movement while preventing direct process-fluid contact with the conventional stem packing. Secondary packing provides an additional containment barrier, making the design suitable for services where fugitive-emission control is important.

The gate provides straight-through isolation when fully open, while the rising stem gives a clear indication of valve position.

Features

  • Welded metal bellows for stem sealing
  • Reduced potential for stem-area emissions
  • Secondary packing for additional containment
  • Full-port flow passage
  • Rising stem with visible position indication
  • Metal-seated wedge gate design
  • Handwheel or gear operation
  • Suitable for steam, gas, oil and process fluids
  • Flanged, butt-weld or socket-weld connections
  • High-temperature and critical process service

Applications & Industries

Applications Industries
Steam isolation Oil & Gas
Process-fluid isolation Refineries & Petrochemical
Hazardous-fluid isolation Chemical Processing
High-temperature piping Power Generation
Thermal-oil systems Steam & Utility Systems
Gas isolation Process Industries
Utility piping Hazardous Fluid Handling

Technical Specifications

Parameter Specification
Valve Type Bellows Seal Gate Valve
Design Wedge Gate
Bonnet Bolted / Welded
Nominal Size DN15-DN600
Pressure Rating Class 150-2500
Body Materials ASTM A105 / ASTM A182 F304, F304L, F316, F316L, F5, F11, F22*
Flow Passage Full Port
Sealing Welded Metal Bellows + Secondary Packing
Stem Rising Stem
End Connections Flanged / Butt-Weld / Socket-Weld
Operation Handwheel / Gear Operator
Media Steam, Gas, Oil, Chemicals and Compatible Process Fluids

Standards & Testing

API 600 applies to cast-steel gate valves, while API 602 covers compact forged-steel gate valves within its scope. API 598 specifies pressure-testing requirements for valves.

Applicable connection and dimensional standards include ASME B16.5 for flanges, ASME B16.10 for face-to-face dimensions and ASME B16.25 for butt-welding ends. Fugitive-emission performance should be stated only where the specific valve configuration has been tested to the applicable fugitive-emission standard.

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