Fairchild Multi-Stage Pneumatic Pressure Regulator, Model 81
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81422

Series: Model 81 Multi-Stage Precision Pressure Regulator Brand: Fairchild Industrial Products - by Rotork

FAIRCHILD Model 81 Multi-Stage Pressure Regulator, 0-5 psig, 0-35 kPa, 1/4" NPT

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  • System Pressure (Maximum): 0-5 psig, 0-0.35 bar, 0-35 kPa
  • Supply Pressure (Maximum): 100 psig, 7 bar, 700 kPa
  • Supply Pressure (Minimum): 20 psig, 1.5 bar, 150 kPa
  • Pipe Size: 1/4" NPT
  • Materials of Construction:
    • Body: Die Case Aluminum
    • Trim: Plated Steel, Stainless Steel, Brass, Aluminum
    • Diaphragms: Nitrile on Dacron
    • Orifice: Sapphire

Specifications

Brand

Actuator Type

  • Tamper-Proof

Air Consumption

  • Maximum

Ambient Temperature Range

  • -40° to 93° C (-40° to 200° F)

BSP Connection

  • 1/4" BSPT Female

Diaphragm Material

  • Nitrile on Dacron

Enclosure, Body Material

  • Die Cast Aluminum

Exhaust Capacity - Relieving Units Only

  • 5.5 scfm (9.4 m³/hour)

Exhaust Port

  • Tapped Exhaust

Media

  • Compressed Air
  • Gas

Mounting

  • Bonnet Mounting

NPT Connection

  • 1/4" NPT Female

Orifice Material

  • Sapphire

Output Pressure - Maximum

  • bar: 7
  • kPa: 150
  • psig: 100

Pressure Range

  • bar: 0 to 0.15
  • bar: 0 to 0.35
  • bar: 0 to 1.5
  • bar: 0.035 to 4
  • bar: 0.035 to 7
  • kPa: 0 to 15
  • kPa: 0 to 150
  • kPa: 0 to 35
  • kPa: 3.5 to 400
  • kPa: 3.5 to 700
  • psig: 0 to 2
  • psig: 0 to 20
  • psig: 0 to 5
  • psig: 0.5 to 100
  • psig: 0.5 to 60

Sensitivity

  • > 0.1" WC (0.254 cm)

Supply Pressure - Maximum

  • bar: 7
  • kPa: 700
  • psig: 100

Supply Pressure Effect

  • > 0.2 psig (0.13 bar, 150 kPa) for 100 psig (7 bar, 700 kPa) Change

Trim Material

  • Aluminum
  • Plated Steel
  • Stainless Steel

Vent

  • Straight
  • Tapped Exhaust

Documentation

Data Sheets

Catalogs

Installation Instructions

View Product Series

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