Find My Check Valve
The DFT® Model SCV® is a corrosion resistant, dependable, versatile and economical spring-assisted, in-line check valve for a wide range of applications. Whether the fluid is liquid, gas or steam, the SCV® provides tight shut-off and protects other equipment in the system from water hammer. Its stainless steel construction insures a long service life.
Unit of Measure
Items
SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 0.5" NPT 316 SS SCV® Threaded In-Line Check Valve

SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 0.5" NPT 316 SS SCV® Threaded In-Line Check Valve

SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 0.5" NPT 316 SS SCV® Threaded In-Line Check Valve

SCV® Threaded In-Line Check Valves

750 CWP/500 WSP 0.5" NPT 316 SS SCV® Threaded In-Line Check Valve

SCV® Threaded In-Line Check Valves

3600 CWP 1/2" NPT 316SS SCV® Threaded In-Line Check Valve
OLD PART # N/A 8317-54 N/A 8317E-57 N/A 8317N-49 N/A 8317F-51 N/A 8303-1
Series N/A SCV®
Size N/A 0.50 inDN 15
Cold Working Pressure N/A 0 to 750 psig0 to 51.7 barg N/A 0 to 750 psig0 to 51.7 barg N/A 0 to 750 psig0 to 51.7 barg N/A 0 to 750 psig0 to 51.7 barg N/A 0 to 3600 psig0 to 248 barg
Working Steam Pressure N/A 500 psig N/A 500 psig N/A 500 psig N/A 500 psig N/A
Dimension A N/A 2.68 in68 mm N/A 2.68 in68 mm N/A 2.68 in68 mm N/A 2.68 in68 mm N/A 3.16 in80 mm
Dimension B N/A 1.62 in41 mm N/A 1.62 in41 mm N/A 1.62 in41 mm N/A 1.62 in41 mm N/A 1.88 in48 mm
Weight N/A 1.1 lb0.5 kg N/A 1.1 lb0.5 kg N/A 1.1 lb0.5 kg N/A 1.1 lb0.5 kg N/A 1.5 lb0.7 kg
Cracking Pressure CP N/A 0.02 bar0.29 psig N/A 0.02 bar0.29 psig N/A 0.02 bar0.29 psig N/A 0.02 bar0.29 psig N/A 0.043 bar0.62 psig
Body N/A A351 CF8M
Body Material N/A A351 CF8M N/A A351 CF8M N/A A351 CF8M N/A A351 CF8M N/A Alloy 20
Seat1 N/A A351 CF8M/Zelon® N/A A351 CF8M/EPDM N/A A351 CF8M/Buna N/A A351 CF8M/Viton® N/A A351 CN7M
Disc N/A 316 SS
Spring N/A Inconel® X-750
Body Seal N/A Zelon® N/A EPDM N/A Buna N/A Viton® N/A Zelon® (470°F max.)
Temperature Rating2
N/A 37 to 470 ºF3 to 243 ºC
ENDS3 N/A NPT
ANSI N/A B1.1 B1.20.1 B16.34
MSS N/A SP-126 SP-25 SP-61
ASTM4 N/A A351GR CF8M
Cv N/A 7 N/A 7 N/A 7 N/A 7 N/A 36
Available Soft Seat Materials N/A Seal Weld (-425 to 700°F) TFE®-Viton® (-40 to 400°F) Viton® (-40 to 400°F) Zelon® (37 to 470°F)
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 Soft seats are available for bubble-tight shutoff. Body seal and soft seat material are the same unless otherwise requested.
  • 2 ASME B16.34-2004
  • 3 NPT x SW available.
  • 4 Contact DFT for NACE.