Threaded In-Line Check Valves

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

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

Unit of Measure

Items	8028 1/4" 316 SS BSE Style Basic-Check® Threaded In-Line Check Valve	8001-98 0.25" 316 SS Basic-Check® Threaded In-Line Check Valve, TFE®-Viton®	8057 1/4" 316 SS BSSH6 Style Basic-Check® Threaded In-Line Check Valve	8012 1/4" 316 SS BS316S Style Basic-Check® Threaded In-Line Check Valve	8020 1/4" 316 SS BSSH7 Style Basic-Check® Threaded In-Line Check Valve
Series	N/A Basic-Check®
Size	N/A 0.25 in
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 psig	N/A 2500 psig	N/A 0 psig6000 psig	N/A 0 psig2500 psig	N/A 0 psig6000 psig
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.water
Valve Cracking Pressure Tolerance	N/A ±10%
Approx. Net Weight Each	N/A 0.38 lb
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.