IMI Norgren

Norgren Reverse Flow Regulators

Theory of Operation:

Reverse flow regulators allow the outlet pressure to flow back through the regulator [via an internal check valve] when the inlet pressure is switched off. This is important when the regulator is placed between a valve and a cylinder.

Features:

- Full flow gauge ports
- Low torque, nonrising pressure adjustment knob
- Balanced valve with floating pin
- Relieving design, outlet pressure can be reduced when regulator is in deadhead.

Part Number
SIZE
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FLOW [SCFM]
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R72R-2AK-RMG
1/4"
70
R73R-3AK-RMG
3/8"
144
R74R-4AK-RMG
1/2"
220
R74R-6AK-RMG
3/4"
220
Part Number
TYPE
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MATERIAL
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4248-89
R72
Plastic Panel Nut
5191-89
R73
Plastic Panel Nut
5191-88
R73
Metal Panel Nut
4248-89
R74
Metal Panel Nut
74316-50
R72
Wall Mounting Brackets
4461-50
R73
Wall Mounting Brackets
4368-51
R74
Wall Mounting Brackets
Part Number
TYPE
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4381-500
R72
4381-600
R73
4381-700
R74
SPECIFICATIONS

Fluid: Compressed Air

Inlet Pressure: R72, R73 and R74 PSIG Maximum

Temperature Range:
  
  R72: 0 to 150 Degrees Fahrenheit
  All Others: 0 to 175 Degrees Fahrenheit

Note: Air supply must be dry enough to avoid ice formation at temperatures below 35 Degrees Fahrenheit.

Gauge Ports:

  R72: 1/8" NPT
  All Others: 1/4" NPT

MATERIALS OF CONSTRUCTION

  R72 -

    Body: Zinc
    Valve: Brass
    Elastomers: Nitrile
    Bonnet and Bottom Plug: Acetal

  R73 / R74 -

    Body and Bonnet: Aluminum
    Valve: Brass
    Elastomers: Nitrile
    Bottom Plug: Acetal

  
https://catalogs.jhf.com/Pneumatic-and-Hydraulic-Equipment/698/