Best in back flow prevention, bar none!
About Our Check Valves
We offer full opening bolted cover swing check, small forged swing and piston checks and dual plate wafer check valves, all designed specifically to prevent reversal of the flow stream thus protecting other equipment in the piping system.
Our API 594 dual plate check valves are internally installed preventing outside leakage, which is a common problem with external stem design.
Cast Steel Swing Check Valve
Design Standard: API 594 or ASME B16.34
Size Range: 2” to 36” *
Pressure Range: Class 150 thru 2500 *
End Connections: Flanged RF & RTJ, Butt Weld *
Inspection and Testing: API 598 Leakage Test
Flanged End Dimensions: ASME B16.5 (≤24”), ASME B16.47 Series A or B (>24”)
Butt Weld End Dimensions: ASME B16.25
Face to Face Dimensions: ASME B16.10
Pressure-Temperature Ratings: ASME B16.34
*Consult sales team for additional sizes, pressure classes and end connections.
Cast Steel Dual Plate Check Valves
Design Standard: API 594, Retainerless
Size Range: 2” to 84” *
Pressure Range: Class 150 – 1500 *
End Connections: Wafer, Lug, Double Flanged *
Inspection and Testing: API 598 Leakage Test
Socket Weld End Dimensions: ASME B16.11
Wafer and Lug Face to Face Dimensions: API 594
Flanged End Dimensions: ASME B16.5 (≤24”), ASME B16.47 Series A or B (>24”)
Pressure-Temperature Ratings: ASME B16.34
*Consult sales team for additional sizes, pressure classes and end connections.
Forged Steel Swing Check Valve
Design Standard: API 602
Size Range: ½” to 2”
Pressure Range: Class 150 – 1500 *
End Connections: Socket Weld, Threaded, Flanged *
Inspection and Testing: API 598 Leakage Test
Socket Weld End Dimensions: ASME B16.11
Threaded End Dimensions: ASME B1.20.1
Flanged End Dimensions: ASME B16.5
Pressure-Temperature Ratings: ASME B16.34
*Consult sales team for additional sizes, pressure classes and end connections.
