Bellow Sealed Gate Valve Design Standards

Type of wedge Flexible, solid
Construction Bolted, welded, extended
End connections Flanged, BW, SW, THR, HUB, PE
Operated Handwheel, gear, bare stem, actuator
Options Extended bonnet, bellow sealed, Heating Jacket, DBB configuration
Bellow seal materials 304 - 321 - 316Ti - Alloy 625 - C276
Design & testing All available international standards according to API - EN - ISO.
Thoroughly degreased and cleaned for O2 services (oxygen)

Size and pressure ranges

  • Size and bore:
    - ANSI 1/2” - 12”
    - DN 10 - DN 300
  • Pressure range:
    - ANSI 125 lbs - 4500 lbs
    - DIN PN 10 - PN 400
  • Temperature range:
    - minus 196 ºC up to 816 ºC
    - minus 320 °F up to 1,500 °F

Bellow Seal Materials

Red Point has a large inventory of 321 and C276 bellows to cover a range of valves from 1/2″ to 2″ with a pressure rating of 150lbs to 1.500lbs.
321 bellows are used in types of medium like:
– Hydrogen
– Steam
– Sour sevice
– Heat transfer fluid
– Ethylene oxide

C-276 bellows are used in types of medium like:
– Suphuric Acid
– Hydrofluoric acid
– Hydrochloric acid
– Chlorine

Applications for Bellow Sealed Gate Valves

Red Point’s bellow sealed gate valves can be deployed for a wide variety of applications in the oil & gas and (petro)chemical industries when high quality and highly reliable valves are required. A few example applications include:

• High-temperature services
• High-cycle and switching services
• Emergency shutdown valves (ESDV)
• High-integrity pressure protection system (HIPPS)
• High-pressure oxygen, nitrogen or hydrogen
• Solids handling (powders, fines, dust and catalysts)
• Polyethylene or polypropylene
• Coal conversion and gasification
• Thermal fluids
• Separator, filter and drying systems
• Compressor stations
• On/off isolation service
• Oil and gas manifolds

Body Material

Commonly used body materials




– Nickel Alloys (Monel®, Inconel®, Hastelloy®, Incoloy®)
– Duplex and Super Duplex
– Carbon steel and low temp carbon steel
– Low alloy steel
– Stainles steel
– Titanium
– Zirconium

View all materials

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