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Model 20BP Back Pressure Pneumatic Booster

Brand: Fairchild Industrial Products
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The Rotork Fairchild Model 20BP is a smaller Back Pressure Pneumatic Booster designed for automated or remote controlling of the back pressure or relief operation typically found in tank systems and other pressurized systems. 

In its Pilot-Operated design, the M20BP will operate from a signal pressure of up to 150 psig [10.0 BAR] (1,000 kPa) and handles up 250 psig (17.0 BAR, 1,700 kPa) system pressure.

The Fairchild Model 20BP Back Pressure Booster provides a flow capacity of 45 SCFM (76.5 m3/Hr), which equates to a Cv factor of approximately 1.0.
Features
  • Flow capacity of 45 SCFM (76.5 m3/Hr)
  • Aspirator tube design
  • A separate Control Chamber isolates the diaphragm from the main flow
  • Unit construction
  • Mounting Bracket available
The Rotork Fairchild Model 20BP is a smaller Back Pressure Pneumatic Booster designed for automated or remote controlling of the back pressure or relief operation typically found in tank systems and other pressurized systems. 

In its Pilot-Operated design, the M20BP will operate from a signal pressure of up to 150 psig [10.0 BAR] (1,000 kPa) and handles up 250 psig (17.0 BAR, 1,700 kPa) system pressure.

The Fairchild Model 20BP Back Pressure Booster provides a flow capacity of 45 SCFM (76.5 m3/Hr), which equates to a Cv factor of approximately 1.0.
Features
  • Flow capacity of 45 SCFM (76.5 m3/Hr)
  • Aspirator tube design
  • A separate Control Chamber isolates the diaphragm from the main flow
  • Unit construction
  • Mounting Bracket available
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Specifications

Brand

Ambient Temperature Range

  • -40° to 93.3° C (-40° to 200° F)

BSP Connection

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

Diaphragm Material

  • Nitrile on Dacron

Elastomers

  • Silicone
  • Viton (Fluorocarbon)

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

Flow Capacity

  • 60 scfm (102 m³/hour) at psig: 100 (kPa: 700, bar: 7) Supply

Mounting

  • Bracket Kit

NPT Connection

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

Ratio

  • 1:1

Ratio Accuracy

  • 1.0 % of psig:100 (kPa:700, bar:7) Input Span

Sensitivity

  • 1/4” WC (0.64 cm)

Signal or Output Pressure - Maximum

  • psig: 150 (kPa: 1,000, bar: 10)

Supply Pressure - Maximum

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

Trim Material

  • Brass
  • Zinc-Plated Steel
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