DFT® Inc
DFT® Inc
140 Sheree Blvd. PO Box 566
Exton, PA 19341-0566
Phone: 800.206.4013
Fax: 847.540.1422
Email: dft@dft-valves.com
Website: www.dft-valves.com
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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 intomore
Unit of Measure

Inventory

Inventory

Specifications

Series

 Basic-Check®

Size

 0.75 in

Line Size Inlet (FNPT) A

 0.75 in

Outside Thread (MNPT) B

 1.50 in

Style

 BS316S
Cold Working Pressure1 0 psig2000 psig

Friction Loss (Feet of Pipe)

 6

Friction Loss (Meter of Pipe)

 1.8
Valve Cracking Pressure2 0.44 psi0.03 bar12.1 in.water

Valve Cracking Pressure Tolerance

 ±10%

Approx. Net Weight Each

 0.88 lb

ENDS

 NPT (Threaded)

Cv

 13.2

Materials of Construction

Seat

 316 SS

Disc

 316 SS

Guard

 CF8M

Spring

 316 SS

Retaining Ring

 316 SS

Available Soft Seat Materials

Available Soft Seat Materials3 Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 450ºF)

Codes and Standards

ANSI

 B1.20.1

MSS

 SP-25

Features

N/A

  • 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 shut-off - lapped disc & seat
  • Easy Maintenance
  • Versatile

Options

N/A

  • Inconel® 750 Spring
  • Soft seat

Application

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.