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Find My Check Valve
The DFT® Basic-Check® Valve is a versatile all-purpose, non-slam valve that provides reliable, low-maintenance service for a wide range of liquids, steam and gases at various pressure/temperature combinations. The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc. to form a complete check valve unit ideally suited for a broad range of pipeline applications or incorporated into machinery for OEM applications. The metal-to-metal sealing area of the Basic-Check® valve’s disc and seat is precision-lapped, providing very tight shutoff of gas, steam and liquid. If bubble-tight shutoff is required, optional resilient soft seats are available.

Standard Features:
  • 1/4" to 2 1/2" Line Size
  • 450 to 6000 CWP
  • Threaded Ends
  • Stainless Steel Construction
  • Spring-Assisted Silent Closing
  • Horizontal or Vertical Installation
  • Tight Shutoff - Lapped Disc & Seat
  • Easy Maintenance
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Unit of Measure
Items
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1/4" 316 SS BSE Style Basic-Check® Threaded In-Line Check Valve
3/8 316 SS BSS Style Basic-Check® Threaded In-Line Check Valve"

0.25" 316 SS Basic-Check® Threaded In-Line Check Valve, TFE®-Viton®
3/8 316 SS BSS Style Basic-Check® Threaded In-Line Check Valve"

1/4" 316 SS BSSH6 Style Basic-Check® Threaded In-Line Check Valve
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1/4" 316 SS BS316S Style Basic-Check® Threaded In-Line Check Valve
3/8 316 SS BSS Style Basic-Check® Threaded In-Line Check Valve"

1/4" 316 SS BSSH7 Style Basic-Check® Threaded In-Line Check Valve
Series N/A Basic-Check®
Size N/A 0.25 inDN 8
Line Size Inlet (FNPT) A N/A 0.25 in
Outside Thread (MNPT) B N/A 1.00 in
Style N/A BSE N/A BSS N/A BSSH6 N/A BS316S N/A BSSH7
Cold Working Pressure1
N/A 0 psig2500 psig0 barg172 barg N/A 2500 psig172 barg N/A 0 psig6000 psig0 barg414 barg N/A 0 psig2500 psig0 barg172 barg N/A 0 psig6000 psig0 barg414 barg
Working Steam Pressure N/A N/A 1775 psig N/A N/A N/A
Friction Loss (Feet of Pipe) N/A 7
Friction Loss (Meter of Pipe) N/A 2.1
Valve Cracking Pressure2 N/A 0.6 psi0.041 bar16.7 in.water424 mm.water31.1 mmHg
Valve Cracking Pressure Tolerance N/A ±10%
Approx. Net Weight Each N/A 0.38 lb0.2 kg
Seat N/A 303 SS N/A 303 SS/TFE®-Viton® N/A 316 SS N/A 316 SS N/A 316 SS
Disc N/A 316 SS N/A 316 SS N/A 316 SS N/A 316 SS N/A 17-7 SS
Guard N/A 17-4 SS N/A CF8M N/A CF8M N/A CF8M N/A CF8M
Spring N/A Inconel® N/A 316 SS N/A 316 SS N/A 316 SS N/A 316 SS
Retaining Ring N/A 316 SS
Available Soft Seat Materials3 N/A N/A Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 450ºF) N/A Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 450ºF) N/A Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 450ºF) N/A Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 450ºF)
Temperature Rating N/A N/A -40 to 400 ºF-40 to 204.44 ºC N/A N/A N/A
ENDS N/A NPT (Threaded)
ANSI N/A B1.20.1 N/A B1.20.1 B16.11 N/A B1.20.1 N/A B1.20.1 N/A B1.20.1
MSS N/A SP-25
Cv N/A 5.8
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 Contingent on service ratings of matching pipe and fittings.
  • 2 Cracking pressure for vertical flow will be slightly different: upward flow, slightly higher; downward flow, slightly less.
    Not recommended for use on discharge of reciprocating compressors.
  • 3 Soft seats are not available for the Style BSE check Valve. Buna-N and Viton are not suitable for steam service.