Dual Plate Check Valves

The Dual Plate Check Valve is an all-purpose non-return valve that is much stronger, lighter and smaller in size compared to a conventional swing check valve.
The Dual Plate Check Valve design is the result of attempts to solve the problems associated with swing check valve and lift check valve. It employs two spring-loaded plates hinged on a central hinge pin. When the flow decreases, the plates close by torsion spring action without requiring reverse flow. This design offers the twin advantages of No Water Hammer and Non-Slam simultaneously. All features put together make the Dual Plate Check Valve one of the most efficient designs. It is also referred to as the SILENT CHECK VALVE.
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The salient features include

  • Sizes from 2” to 120” diameter.
  • ANSI Class 125 to ANSI Class 2500.
  • API 6A valves ranging from API 5000 to API 10000.
  • Suitable for -196° C (Cryogenic) to 900° C (Fire Safe applications).
  • Soft Seated and Metal to Metal Seated.
  • Fugitive Emission Free Retainer less Design.
  • Models: Wafer, Double & Mono Flanged, Lugged & Sold Lugged, Butt Welded & Hub Ended, Extended Flanged Body, Jacketed Bodies, Ring Type Joints (RTJs) and Cladded.
  • Optimum Spring Design for more than 1 million cycles.
  • Zero Velocity Non-Slamming Characteristics.
  • No Valve - Induced Water Hammer Effect.
  • Standard compliance with API 594, 598 & 6D, BS 6364, API 6FA amongst others.