Series 500 check valves are fire-tested carbon steel flanged end check valves with a full-open, through-conduit design for low pressure drop and less turbulence.​
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API 6D, API 6FD (fire tested, except 1”)​
Body Material A216 WCC​
Seat Buna, FKM, HBNR​
Size 1” – 12 “​
Rating #150 - #1500, 5000 psi​
End connection RF, RTJ​
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Series 822 check valve is designed to safely prevent backflow of liquid or gas in pipeline applications. The valve's beveled, self-aligning clapper and seat design incorporates a molded seal in the clapper for a bubble-tight primary seal and metal-to-metal secondary seal.​
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Body Material : DI, WCC, LCC, CF8M, AlBr​
Seat insert : Buna, FKM, HNBR​
Size DI : 1, 2, 3, 4”​
CS/SS : ½ , 1, 1 ½, 2, 2 ½, 3, 4”​
AlBr : 1, 2”​
End connection : NPT, SW, grooved​
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Short-pattern wafer check valve / single plate check valve​
Size : 2 - 12”​
Rating : #150 -600​
Body Material : CS, SS​
Connection : O-ring, RTJ sealing​