Pressure Seal Check Valves


DSI® offers a broad range of Cast Steel Pressure Seal Check valves in Buttweld and Flanged end connections.

  • Size Range: 2" thru 24"
  • Pressure Class: 600-4500
  • Style: Swing Check design, Straight Lift Tilt Disc design, and Y-Pattern design
  • Materials: A216 WCB, WC6, WC9, C5, C12, C12A, CF8M and special alloys

Standard Construction Features

Swing Check and Tilt Disc
Pressure Seal check valves are designed for reliability in high velocity service applications to prevent backflow. The check valves are designed to operate in either vertical upflow or horizontal pipe runs. Seating surfaces are hardfaced with Stellite®6 to provide high life cycle capability.

The swing check design offers a higher flow coefficient than a tilting disc design with higher flow area. The tilting disc is a non-slam design.

Available Literature & Data