Find My Check Valve

The DFT® Model PDC® Silent Check Valve is 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.

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PDC® Flanged Check Valves

A351 CF8M 2" 316 SS Class 600 RF PDC® Flanged Check Valve
PDC® Flanged Check Valves

A352 LCC 2" 316 SS Class 600 RF PDC® Flanged Check Valve
PDC® Flanged Check Valves

A216 WCB 2" 316 SS Class 600 RF PDC® Flanged Check Valve
PDC® Flanged Check Valves

A216 WCB 2" 316 SS Class 300 RF PDC® Flanged Check Valve
PDC® Flanged Check Valves

A352 LCC 2" 316 SS Class 300 RF PDC® Flanged Check Valve
Series N/A PDC®
ASME CLASS N/A 600 N/A 600 N/A 600 N/A 300 N/A 300
Size N/A 2.00 inDN 50
Dimension A N/A 11.5 in292 mm N/A 11.5 in292 mm N/A 11.5 in292 mm N/A 10.5 in267 mm N/A 10.5 in267 mm
Dimension B N/A 6.5 in165 mm
Weight N/A 35 lb15.9 kg N/A 35 lb15.9 kg N/A 35 lb15.9 kg N/A 27 lb12.2 kg N/A 27 lb12.2 kg
Cracking Pressure CP N/A 0.028 bar0.41 psig N/A 0.028 bar0.41 psig N/A 0.028 bar0.41 psig N/A 0.034 bar0.49 psig N/A 0.034 bar0.49 psig
Body N/A A351 CF8M N/A A352 LCC N/A A216 Grade WCB N/A A216 Grade WCB N/A A352 LCC
Body Material N/A 316 Stainless Steel N/A Low Temp. Carbon Steel N/A Carbon Steel N/A Carbon Steel N/A Low Temp. Carbon Steel
Disc N/A A351 CF8M
Seat1 N/A A351 CF8M
Spring2 N/A A313 316 (450°F max.) Option
Spring for Ball check N/A Inconel® X-750
Disc Guide N/A A479 316
Bushing N/A Rulon®
Seal Ring N/A Teflon®/Hastelloy® C276
Spring Retainer - Ball Check N/A A479 316
Guide Ring N/A Teflon
Ball Check N/A 440C SS
Orifice Plug N/A A479 316
Body Seal3 N/A 316 / Flexible Graphite N/A 316 / Flexible Graphite N/A 316 / Flexible Graphite N/A Durlon 9000 N/A Durlon 9000
Available Soft Seat Materials4 N/A Buna-N (-70 to 250°F) EPDM (-75 to 300°F) TFE®-Viton® (-40 to 400°F) Viton® (-40 to 400°F) Zelon® (37 to 400°F)
ENDS N/A FLG (RF)
ANSI N/A B1.1 B16.10 B16.20 B16.34 B16.5
MSS N/A SP-126 SP-25 SP-6 SP-61
ASTM N/A A216GR WCB A351GR CF8M CRN NACE
Other N/A CRN NACE
Cv N/A 62
Applications N/A Compressor Discharge Metering Pumps Process Lines Pump Discharge Refrigeration
  • 1 Soft seats are available for bubble-tight shutoff.
  • 2 Inconel X-750 spring is available. (500°F maximum)
  • 3 Contact DFT for other materials.
  • 4 Teflon Encapsulated Viton