Keckley Style DL Epoxy Coated Cast 316 Stainless Steel Style DL Check Valve, Wafer Raised Face, 720 psi

Stainless Steel Check Valves
431627P
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Keckley Style DL Epoxy Coated Cast 316 Stainless Steel Style DL Check Valve, Wafer Raised Face, 720 psi
  • Body Material: Cast 316 Stainless Steel
  • Connection Type: Wafer Raised Face Spiral Serrated
  • Manufacturer: Keckley
  • Pressure Class: Class 300
  • Temperature Rating: -20 to 400 deg F
  • Trim Material: 316 Stainless Steel Disc
  • Finish/Color: Epoxy Coated
  • Item Name: Check Valve
  • Material Standard: ASTM A351 Grade CF8M
  • Seat Material: Viton
  • Type: Style DL, Lug Body, Double Disc

The Keckley retainerless wafer lug 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 lug 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
  • 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 lug body
  • Check valves have no body penetrations eliminating potential leak paths
  • Standards/Approvals: API 594 and 6D, API 598, ASME B16.5, ASME B16.34, 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