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The DFT® Model SCV® Check Valve is a corrosion-resistant, dependable, versatile and economical spring-assisted, non-slam check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the SCV® provides tight shutoff and protects other equipment in the system from water hammer. Its stainless steel construction assures a long service life.

Standard Features:
  • 1/2" to 3" Line Size
  • 750 & 3600 CWP
  • NPT & SW Ends
  • Stainless Steel Construction
  • Inconel® X-750 Spring
  • Spring-Assisted Silent Closing, Non-Slam
  • Zelon® "O" Ring Body Seal
  • Horizontal or Vertical Installation
  • Body-Guided Disc
  • Tight Shutoff Lapped Disc & Seat
750 CWP is rated to 470ºF.
3600 CWP is rated to 400ºF.
Buna-N CO2 resistant "O" ring is available upon request.
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Unit of Measure
Items
SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 1/2" NPT 316SS SCV® Threaded In-Line Check Valve
List Price {QUOTE}
SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 3/4" NPT 316SS SCV® Threaded In-Line Check Valve
List Price {QUOTE}
SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 1" NPT 316SS SCV® Threaded In-Line Check Valve
List Price {QUOTE}
SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 1 1/4" NPT 316SS SCV® Threaded In-Line Check Valve
List Price {QUOTE}
SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 1 1/2" NPT 316SS SCV® Threaded In-Line Check Valve
List Price {QUOTE}
OLD PART # N/A 8317 N/A 8368 N/A 8369 N/A 8371 N/A 8373
Series N/A SCV®
Size N/A 0.50 inDN 15 N/A 0.75 inDN 20 N/A 1.00 inDN 25 N/A 1.25 inDN 32 N/A 1.50 inDN 40
ASME CLASS N/A 300
Cold Working Pressure
N/A 750 psig51.7 barg
Working Steam Pressure N/A 510 psig
Dimension A N/A 2.68 in68 mm N/A 3.00 in76 mm N/A 3.32 in84 mm N/A 3.85 in97.8 mm N/A 4.75 in121 mm
Dimension B N/A 1.62 in41 mm N/A 2.33 in59 mm N/A 2.54 in65 mm N/A 3.06 in78 mm N/A 3.44 in87 mm
Weight N/A 1.1 lb0.5 kg N/A 1.5 lb0.7 kg N/A 1.9 lb0.9 kg N/A 3.9 lb1.8 kg N/A 4.7 lb2.1 kg
Cracking Pressure CP N/A 0.29 psig0.02 bar N/A 0.24 psig0.017 bar N/A 0.36 psig0.025 bar N/A 0.28 psig0.019 bar N/A 0.24 psig0.017 bar
Body N/A A351 CF8M
Body Material N/A 316 Stainless Steel
Trim N/A 316 SS
Seat1 N/A A351 CF8M
Disc N/A 316 SS
Spring N/A Inconel® X-750
Body Seal N/A Zelon® (470 ºF max.)
Available Soft Seat Materials N/A Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 470ºF)
Temperature Rating2
N/A 37 to 470 ºF2.78 to 243.33 ºC
B (Dia.) N/A 1.62 in41 mm N/A 2.33 in59 mm N/A 2.54 in65 mm N/A 3.06 in78 mm N/A 3.44 in87 mm
ENDS3 N/A NPT (Threaded)
ANSI N/A B1.1 B1.20.1 B16.11 B16.25 B16.34
MSS N/A SP-126 SP-25 SP-61
ASTM4 N/A A351GR CF8M
Options N/A
  • 316 SS Springs
  • Body seal weld (700°F Maximum)
  • Soft seat
  • Alloy 20 body & seat (ASME 300)
  • Hastelloy C body & seat (ASME 300)
  • Socket weld ends
  • SCV-R restrictor check (higher cracking pressure)
  • Butt weld ends
  • NACE
  • Light cracking pressure springs
ASME CWP N/A 750
Cv N/A 7 N/A 13 N/A 22 N/A 39 N/A 54
Other N/A API PED
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
Repair Kit Available N/A N/A , Repair Kits ({QUOTE})
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Valve Type N/A Check Valve
  • 1 Soft seats are available for bubble-tight shutoff. Body seal and soft seat material are the same unless otherwise requested.
  • 2 ASME B16.34
  • 3 NPT x SW available.
  • 4 Contact DFT for NACE.