Keckley Style DD Epoxy Coated Cast Carbon Steel Style DD Check Valve, Wafer Raised Face, 285 psi

Carbon Steel Check Valves
431529P
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Keckley Style DD Epoxy Coated Cast Carbon Steel Style DD Check Valve, Wafer Raised Face, 285 psi
  • Body Material: Cast Carbon Steel
  • Connection Type: Wafer Raised Face Spiral Serrated
  • Manufacturer: Keckley
  • Pressure Class: Class 150
  • Seat Material: Buna-N
  • Temperature Rating: -20 to 250 deg F
  • Trim Material: 316 Stainless Steel Disc
  • Finish/Color: Epoxy Coated
  • Item Name: Check Valve
  • Material Standard: ASTM A216 Grade WCB, ASTM A351 Grade CF8M
  • Type: Style DD, Double Disc

The Keckley retainerless wafer body double disc check valve features a single cast body without pin retainer holes in the body. This design minimizes prospective leak paths through the valve body making it a preferable option for highly toxic, corrosive, or hazardous gas chemical processing applications. Keckley wafer body double disc check valves are also suitable for liquid, natural gas, steam service, and vacuum service applications.

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
  • Retainerless design check valves have no body penetrations eliminating potential leak paths
  • Allows for interchangeability of the hinge pin and stop pin
  • Standards/Approvals: 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