Keckley Style DD Epoxy Coated Cast Iron Style DD Check Valve - Wafer Flat Face - 200 psi - -20 to 250 deg F

Cast Iron Check Valves
431515P
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Keckley Style DD Epoxy Coated Cast Iron Style DD Check Valve - Wafer Flat Face - 200 psi - -20 to 250 deg F
  • Body Material: Cast Iron, Iron
  • Connection Type: Wafer Flat Face
  • Disc Material: 304 Stainless Steel
  • Manufacturer: Approved Supplier, Keckley
  • Pressure Class: 125, Class 125
  • Seat Material: Buna-N
  • Finish/Color: Epoxy Coated
  • Item Name: Check Valve
  • Material Standard: ASTM A126 Class B, ASTM A351 Grade CF8
  • Temperature Rating: -20 to 250 deg F
  • Trim Material: Cast 304 Stainless Steel
  • Type: Style DD, Double Disc

Keckley Style DD Epoxy Coated Cast Iron Style DD Check Valve - Wafer Flat Face - 200 psi - -20 to 250 deg F

NOMINAL SIZE
  • Features
  • Short face to face dimension
  • Spring loaded double disc design creates a low cracking pressure and allows for the valve discs to close prior to any flow reversal minimizing water hammer and/or surges in the media
  • Tension on the specially designed spring with extended spring legs allows the disc center section to lift off the seat prior to the outside edge opening preventing seat wear in the center "heel" section of the seating surface
  • Standard elastomeric seats can produce zero leakage when correctly specified, loaded and installed
  • Metal seating surfaces are precision machined and lapped to a mirror finish to provide a long lasting seal
  • Field serviceable without the need for special tools
  • Allows for interchangeability of the hinge pin and stop pin
  • Retainlerless wafer body
  • Check valves have no body penetrations eliminating potential leak paths
  • Standards/Approvals: API 594 and 6D, API 598, ASME B16.1, MSS SP-6, MSS SP-25, MSS SP-55
  • Applications: For liquid and gas applications where protection from flow reversal in a pipeline is required