Product picture for DUO-CHEK® Cryogenic High Performance Non-Slam Check Valves

DUO-CHEK® Cryogenic High Performance Non-Slam Check Valves

Duo-Chek® High Performance Non-Slam Dual Plate Check Valves are the original mission wafer check valves now modified to meet the requirements of Cryogenic service

Features And Benefits

  • Robust Design capable of passing the stringent leak rate requirements at cryogenic temperatures
  • Dual-plate designs that are compact and lightweight for efficient seating, operation and lower installation cost
  • Independent springs with long legs to prevent seat scrubbing and provide non-slam performance
  • Retainerless valve design without body penetration for critical service applications

Technical Details

MATERIALS OF CONSTRUCTION

  • Body Materials: Cast Iron, Carbon Steel, Stainless Steels, Duplex Stainless Steel, Super Duplex, other Cast and Forged grades are available on request
  • Resilient Seat Materials: EPDM, Buna-N, Neoprene, and Viton-B
  • Internal CRA cladding and rubber lining varients available

SIZE RANGE

  • 2″ to 88″

PRESSURE RATING

  • ASME Pressure Class 125 – 4500
  • API pressure classes up to 15K

TEMPERATURE RANGE

  • -196°C to 550°C

BODY CONFIGURATION

  • Wafer, lug, double flanged, extended body and Steam Jacketed

END CONNECTIONS

  • Weld End, Hub End, Flanged (Plain, Serrated and Ring Joint)

Applications

Gas Production

  • LNG (Liquiefaction / Regasification)

Chemicals and Petrochemicals

  • Ethylene production
  • Air Separation

Literature

Certificates


  • ISO – Certification (Site) 9001 / 14000
  • Pressure Equipment Directive (PED) 2014/68/EU
  • BS 6364
  • Shell DVT
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