DUO-CHEK® High Performance Non-Slam Check Valves

Duo-Chek® High Performance Non-Slam Dual Plate Check Valves are the original mission wafer check valves introduced to the market in the late 50's

Features And Benefits

  • 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

STANDARD MATERIALS OF CONSTRUCTION

  • Body Materials: Cast Iron, Carbon Steel, Stainless Steels, Duplex Stainless Steel, Super Duplex
  • Resilient Seat Materials: EPDM, Buna-N, Neoprene, and Viton-B
  • Other materials available on request (contact factory)

SIZE RANGE

  • 2″ to 88″

PRESSURE RATING

  • Class 125 – 2500

BODY CONFIGURATION

  • Wafer, lug, double flanged, weld end, hub end, and extended body styles

Applications

  • Petroleum Refining
  • Oil and Gas Production
  • Chemicals and Petrochemicals
  • Power Generation
  • Steel/Primary Metals
  • Marine
  • Water and Wastewater
  • Pulp and Paper
  • FPSO
  • LNG (Liquiefaction / Regasification)
  • Renewable Energy
  • Oil Transmission Pipelines

Certificates


  • ISO – Certification (Site) 9001 / 14000
  • BS 6364
  • Shell DVT
  • TSG Certification
  • Russian TZR
  • API 6FD
  • API 594
  • API 598
  • ASME B16.5 & B16.47
  • ASME B16.34
  • API 6A
  • PED 2014/68/EU
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