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
Technical Details
Applications
Literature
Certificates
Videos
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