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The SCV-R® Check Valve is a non-slam Spring-assisted check valve designed for applications requiring "higher cracking pressures" than the DFT Model SCV® check valve. The SCV-R® check valve is a self-contained check valve that installs directly in a pipeline and contains all the proven features of the SCV® check valve.

Standard Features:
  • 1/2" to 2" Line Size
  • 750 CWP
  • NPT & SW Ends
  • Stainless Steel Construction
  • Inconel® X-750 Spring
  • Spring-Assisted Silent Closing, Non-Slam
  • Cracking Pressures: 0.8 to 40.8 psig
  • Zelon® "O" Ring Body Seal
  • Horizontal or Vertical Installation
  • Body Guided Disc
  • Tight Shutoff Lapped Disc & Seat
  • Easy Maintenance
Notes:
  • 3" is not Available
  • Contact DFT® for Other Cracking Pressures.
  • 750CWP is Rated to 470ºF.
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Unit of Measure
Items
SCV-R® In-Line Restrictor Check Valves

750 CWP 1/2" NPT 316 SS 9.2 psig SCV-R® In-Line Restrictor Check Valve
SCV-R® In-Line Restrictor Check Valves

750 CWP 1/2" NPT 316 SS 10.7 psig SCV-R® In-Line Restrictor Check Valve
SCV-R® In-Line Restrictor Check Valves

750 CWP 1/2" NPT 316 SS 6.5 psig SCV-R® In-Line Restrictor Check Valve
SCV-R® In-Line Restrictor Check Valves

750 CWP 1/2" NPT 316 SS 7.7 psig SCV-R® In-Line Restrictor Check Valve
SCV-R® In-Line Restrictor Check Valves

750 CWP 1/2" NPT 316 SS 12.3 psig SCV-R® In-Line Restrictor Check Valve
OLD PART # N/A 8317-RC092 N/A 8317-RC107 N/A 8317-RC065 N/A 8317-RC077 N/A 8317-RC123
Series N/A SCV-R®
Size N/A 0.50 inDN 15
Body Material N/A 316 Stainless Steel
Cold Working Pressure
N/A 750 psig51.7 barg
Working Steam Pressure N/A 510 psig
Dimension A N/A 2.68 in68 mm
B (Dia.) N/A 1.62 in41 mm
Weight N/A 1.1 lb0.5 kg
Cracking Pressure CP N/A 9.2 psig0.635 bar N/A 10.7 psig0.738 bar N/A 6.5 psig0.449 bar N/A 7.7 psig0.531 bar N/A 12.3 psig0.849 bar
Cracking Pressure CP Tolerance N/A ±10%
Temperature Rating
N/A 37 to 470 ºF2.78 to 243.33 ºC
Body1 N/A A351 CF8M
Seat2 N/A 316 SS
Disc N/A 316 SS
Body Seal N/A Zelon® O-ring
Spring N/A Inconel® X-750
Spring Retainer Assembly N/A 316 SS
"O" Ring N/A Zelon (470°F max.)
ENDS N/A NPT (Threaded)
ASTM N/A A351GR CF8M
ANSI N/A B1.1 B1.20.1 B16.11 B16.25 B16.34
MSS N/A SP126 SP-25 SP61
Cv N/A 6
Available Soft Seat Materials N/A TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 470ºF)
Applications N/A Autoclaves Boiler Feed & Discharge Chemical Lines Compressor Discharge Condensate Lines Cookers Cooling Towers Crude & Refined Product Lines Cryogenics Digester Evaporators Fly Ash System Generator Inlet & Discharge Hydraulic Lines Metering Pumps Mine Dewatering Nitrogen Purge Process Lines Pump Discharge Refrigeration Steam Lines Vacuum Breaker Water Lines Water Treatment
  • 1 A351 CF8M is the casting equivalent of 316 SS.
  • 2 Soft seats are available for bubble tight shutoff. Body seal and soft seat material are the same unless otherwise requested.