Find My Check Valve
The DFT® Restrictor Check Valve (RCV) is a versatile, all-purpose, spring-assisted, in-line check valve for applications that require higher cracking pressures to open the check valve than those offered by other DFT® check valves. Cracking pressures are available from 2 to 40 psi. Like the Basic-Check® valve, the Restrictor Check provides reliable, low maintenance service for a wide range of fluids 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 couplings, drain elbows, etc. (not provided by DFT®) to form a complete check valve unit ideally suited for a broad range of applications. The RCV should not be considered a substitute for a Pressure Relief Valve.
Not recommended for use on discharge of reciprocating compressors.

Warning: Use with extra deep, bell reducer only.
Unit of Measure

Inventory

Inventory

0

Specifications

Series

Restrictor Check

Outside Thread (MNPT) B

2.00 in

Friction Loss (Feet of Pipe)

7

Friction Loss (Meter of Pipe)

2.1

Valve Cracking Pressure

12.9 psi0.889 bar

Cold Working Pressure

0 psig1500 psig0 barg103 barg

Valve Cracking Pressure Tolerance

±10%

Approx. Net Weight Each

1.25 lb0.6 kg

ENDS

NPT (Threaded)

Materials of Construction

Seat

303 SS

Disc

316 SS

Guard

CF8M

Spring

302 SS

Retaining Ring

316 SS

Available Soft Seat Materials

Available Soft Seat Materials1 Buna-N (-70 to 250ºF) EPDM (-75 to 300ºF) TFE®-Viton® (-40 to 400ºF) Viton® (-40 to 400ºF) Zelon® (37 to 470ºF)

Codes and Standards

ANSI

B1.20.1

MSS

SP-25
ASTM2 303 SS not acceptable for CRN

Features

N/A

  • Higher cracking pressures (2 to 40 psi)
  • 1/4" to 2 1/2" Line size
  • 450 to 2500 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

  • 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 Buna-N and Viton are not suitable for steam service.
  • 2 CRN: Contact DFT for acceptable materials.