PDC<sup>®</sup> Check Valve

PDC® Check Valve

The DFT® model PDC® check valve is a silent, non-slam check valve specially designed for use on the discharge side of reciprocating air or gas compressors. It includes a pulse-damping chamber to maintain the disc in the open position during the momentary reductions in flow associated with each cycle of a reciprocating compressor and to protect against premature seat wear.


  • Pulse-damped design for modulating “air” or “gas” applications
  • Discharge of reciprocating air/gas compressors
  • Self-sizing
  • 2” to 20” line size*
  • ASME class 150 to 1500
  • RF & RTJ flanged ends
  • ASME B16.10 face-to-face dimensions
  • Standard Body Materials:**
    • A216 WCB carbon steel
    • A351 CF8M stainless steel
    • A352 LCC low-carbon steel
  • Stainless steel trim
  • Center-guided/dual-guided stem
  • Spring assisted silent closing, non-slam
  • Tight shutoff – lapped disc & seat
  • Horizontal or vertical installation
  • Protected spring
  • Axial Flow
  • Nozzle style
  • Easy maintenance
  • Options:
    • Inconel® X-750 spring
    • Soft seat
    • NACE

*consult TFC for larger sizes
**consult TFC for additional alloys