Top Entry Check Valves

Cast Steel Bolted Bonnet Check Valves are designed for fast check valve action and maximum service life.
NPS 2"-36" Class 150-2500
Design Features: Swing check valves can fit on both horizontal and vertical (up-flow) piping; Corrosion-resistant overlaying of seats and disc sealing surfaces;  Robust one-piece construction to withstand the severe shock of check valve service. 

Size range: 2” to 36”

Pressure Class: ANSI 150 to 2500

Temperature range: -60 °C to +650 °C

Materials: ASTM, UNS, AISI, NACE MR-01-03 
Carbon, alloy and stainless steels, duplex steels, special alloys CRA weld overlays are available. All materials conform to NACE MR-01-75 upon requirement.

Flanges:
 ASME B16.5 and B16.47, API 605, MSS-SP 44

Buttweld: ASME B16.25