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FAIRCHILD MODEL 4500A PNEUMATIC
VOLUME BOOSTER, ALUMINUM BODY,
3/4" NPT CONNECTION, 1:1 RATIO
CORROSION RESISTANT TRIM

Specifications

Actuator Type

  • Bypass Valve

Ambient Temperature Range

  • -40° to 93° C (-40° to 200° F)

BSP Connection

  • 1/2” BSPP Female
  • 1/2” BSPT Female
  • 3/4” BSPP Female
  • 3/4” BSPT Female
  • 3/8” BSPP Female
  • 3/8” BSPT Female

Elastomers

  • Fluorocarbon (Viton)
  • Nitrile on Dacron

Enclosure, Body Material

  • Aluminum

Environmental Protection

  • Acceptable for use in Zones 1 & 2 for Gas Atmosphere, Groups IIA & IIB & Zones 21 & 22 for Dust Atmospheres

Exhaust Capacity - Relieving Units Only

  • 40 scfm
  • 40 SCGM (65.2 m³/hour) where Downstream Pressure is psig: 5 (bar: 0.35, kPa: 35) Above psig: 20 (bar: 1.5, kPa: 150) Set Point.
  • 65.2 m³/hour

Flow Capacity

  • 150 scfm (255 m³/hour)
  • 150 scfm (255 m³/hour) at psig: 100 (bar: 7, kPa: 700) Supply & psig: 20 (bar: 1.5, kPa: 150) Set Point
  • 255 m³/hour

NPT Connection

  • 1/2” NPT Female
  • 3/4” NPT Female
  • 3/8” NPT Female

Output Pressure - Maximum

  • bar: 10
  • kPa: 1,000
  • psig: 150

Ratio

  • 1:1
  • 1:2
  • 1:3
  • 2:1
  • 3:1

Relief

  • Relieving

Set Point - Decreasing

  • Inches WC: 1.0 to 3.0

Set Point - Increasing

  • Inches WC: 1.0 to 3.0

Supply Pressure - Maximum

  • bar: 17
  • kPa: 1,700
  • psig: 250

Supply Pressure Effect

  • bar: 0.007 to 0.021
  • kPa: 0.7 to 2.1
  • psig: 0.1 to 0.3

Trim Material

  • 316 Stainless Steel
  • Brass
  • Zinc-Plated Steel

Vent

  • Straight
  • Tapped Exhaust
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