DSV<sup>®</sup> Check Valve

DSV® Check Valve

The DSV® check valve is a non-slam spring-assisted check valve designed to prevent flow reversal in industries with strict cleanliness codes. To accommodate various piping arrangements, the DSV® Check Valve is available as a “Vertical” or “Horizontal” valve. The Horizontal valve is for horizontal lines requiring a self-draining valve. The “Vertical” design is for vertical installations and horizontal lines when a self-draining valve is not required. The DSV® check valve, with a 316L stainless steel body and seat, is fastened with a quick release clamp and elastomeric body seal to permit fast and easy access to the internals. The internal surface finish is 32 Ra while the disc and seat are lapped to provide excellent shutoff.



  • Meets 3A Standard 58-01
  • 1/2” to 4” line size
  • 150 CWP, 108 ASME pressure class
  • Clamped ends
  • 316L body and seat
  • 316 disc, spring & guide assembly
  • 32 Ra internal surface finish
  • Electropolished spring (15 Ra)
  • 0.16 to 0.66 psig cracking pressure
  • EPDM body seal
  • Edge-guided disc (1/2” thru 2”)
  • Center-guided disc (2-1/2” thru 4”)
  • Spring assisted silent closing, non-slam
  • Tight shutoff – lapped disc & seat
  • Horizontal or vertical installation
  • CIP (Clean In Place)
  • Options:
  • 15 Ra internal surface finish
  • Tuf-Flex® or Viton® body seal
  • Straight thru inline or offset inlet/outlet