Model 20 Pneumatic Precision Volume Booster

Brand: Fairchild Industrial Products

The Rotork Fairchild Model 20 Volume Booster is a smaller pneumatic device capable of high flow and exhaust capacity.

This device uses a force balance system to control the movement of the supply and exhaust valves.

As a pilot operated regulator design, the M20 handles up to 150 psig, [10.0 BAR], (1,000 kPa) supply pressure and has ten available ratios to cover a wide range of applications.

The M20 Booster provides a flow capacity of 45 SCFM (76.5 m3/HR), which equates to a Cv factor of approximately 1.0 in forward mode.

Typical Part Numbers are 20812, 20822, 20832, 20842, 20852, 20862, 20813, 20823, 20833, 20843, 20853, 20863
Features
  • Flow capacity of 45 SCFM (76.5 m3/HR)
  • Ten available pressure ratios
  • Optional Adjustable By-Pass Needle Valve option includes bubble tight exhaust valve
  • Optional Fixed Negative Bias
  • A separate Control Chamber isolates the diaphragm from the main flow
  • Unit construction
  • Mounting Bracket available
  • Canadian Registration Number (CRN) Certification

Models matching criteria: 1,000
  • Ratio - 2:1
  • Port Size - 1/2" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$60.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/4" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Exhaust Port - Straight
100+ In Stock
$671.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/4" NPT
  • Port Thread - NPT
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - None
  • Increased Adjustability - Bypass Valve
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$1,322.00 CAD
$10.00 Shipping
  • Ratio - 3:1
  • Port Size - 1/2" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$1,582.00 CAD
$10.00 Shipping
FAIRCHILD Model 20 Pneumatic Precision High Capacity Volume Booster, 1:1 Ratio, 1/4" NPT, By-Pass Valve view more
  • Ratio: 1:1
  • Supply Pressure (Maximum): 250 psig, 17 bar, 1700 kPa
  • Pipe Size: 1/4" NPT
  • Pipe Thread: NPT
  • Ambient Temperature: -40°F to +200° (-40°C to +93.3°C)
  • Material of Construction:
    • Body & Housing: Aluminum
    • Trim: Zinc Plated Steel, Brass
    • Diaphragms: Nitrile on Dacron Fabric
  • Options: By-Pass Valve
100+ In Stock
$2,056.00 CAD
$10.00 Shipping
  • Ratio - 2:1
  • Port Size - 3/8" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Non-Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$2,303.00 CAD
$10.00 Shipping
  • Ratio - 2:1
  • Port Size - 3/8" NPT
  • Port Thread - NPT
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$2,524.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/2" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Silicone
  • Relief - Non-Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$179.00 CAD
$10.00 Shipping
  • Ratio - 1:2
  • Port Size - 3/8" NPT
  • Port Thread - NPT
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$368.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/4" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$407.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 3/8" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Silicone
  • Relief - Non-Relieving
  • Output Options - None
  • Increased Adjustability - Bypass Valve
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$1,103.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 3/8" NPT
  • Port Thread - NPT
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - None
  • Increased Adjustability - Bypass Valve
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$2,117.00 CAD
$10.00 Shipping
  • Ratio - 2:1
  • Port Size - 3/8" NPT
  • Port Thread - NPT
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$2,340.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/4" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$2,504.00 CAD
$10.00 Shipping
  • Ratio - 1:3
  • Port Size - 1/2" NPT
  • Port Thread - NPT
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$653.00 CAD
$10.00 Shipping
  • Ratio - 1:2
  • Port Size - 1/2" NPT
  • Port Thread - NPT
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$882.00 CAD
$10.00 Shipping
  • Ratio - 1:3
  • Port Size - 1/4" NPT
  • Port Thread - NPT
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$1,005.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 3/8" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Silicone
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$1,142.00 CAD
$10.00 Shipping
  • Ratio - 3:1
  • Port Size - 1/4" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$1,146.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/4" NPT
  • Port Thread - NPT
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - Bypass Valve
  • Exhaust Port - Straight
100+ In Stock
$1,477.00 CAD
$10.00 Shipping
  • Ratio - 1:2
  • Port Size - 1/2" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Nitrile on Dacron
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$1,577.00 CAD
$10.00 Shipping
  • Ratio - 2:1
  • Port Size - 3/8" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$1,772.00 CAD
$10.00 Shipping
  • Ratio - 1:3
  • Port Size - 1/2" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Nitrile on Dacron
  • Relief - Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$1,897.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 3/8" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Silicone
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - Bypass Valve
  • Exhaust Port - Straight
100+ In Stock
$2,489.00 CAD
$10.00 Shipping
  • Ratio - 4:1
  • Port Size - 1/2" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Nitrile on Dacron
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$369.00 CAD
$10.00 Shipping
  • Ratio - 3:1
  • Port Size - 1/2" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$1,220.00 CAD
$10.00 Shipping
FAIRCHILD Model 20 Pneumatic Precision High Capacity Volume Booster, 1:1 Ratio, 3/8" NPT, Non-Relieving view more
  • Ratio: 1:1
  • Supply Pressure (Maximum): 250 psig, 17 bar, 1700 kPa
  • Pipe Size: 3/8" NPT
  • Pipe Thread: NPT
  • Ambient Temperature: -40°F to +200° (-40°C to +93.3°C)
  • Options:
    • Non-Relieving
  • Material of Construction:
    • Body & Housing: Aluminium
    • Trim: Zinc Plated Steel, Brass
    • Diaphragms: Nitrile on Dacron Fabric
100+ In Stock
$1,382.00 CAD
$10.00 Shipping
  • Ratio - 1:2
  • Port Size - 3/8" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$1,872.00 CAD
$10.00 Shipping
  • Ratio - 1:2
  • Port Size - 3/8" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$2,057.00 CAD
$10.00 Shipping
  • Ratio - 2:1
  • Port Size - 1/2" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$2,283.00 CAD
$10.00 Shipping
  • Ratio - 2:1
  • Port Size - 1/2" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$2,324.00 CAD
$10.00 Shipping
  • Ratio - 1:2
  • Port Size - 1/2" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Non-Relieving
  • Output Options - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$2,389.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/4" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Non-Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$308.00 CAD
$10.00 Shipping
  • Ratio - 1:2
  • Port Size - 1/4" NPT
  • Port Thread - BSPT (Tapered)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$484.00 CAD
$10.00 Shipping
  • Ratio - 1:3
  • Port Size - 1/4" NPT
  • Port Thread - BSPP (Parallel)
  • Elastomers - Fluorocarbon (Viton)
  • Relief - Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$533.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/2" NPT
  • Port Thread - NPT
  • Elastomers - Silicone
  • Relief - Non-Relieving
  • Output Options - None
  • Increased Adjustability - None
  • Exhaust Port - Tapped Exhaust
100+ In Stock
$781.00 CAD
$10.00 Shipping
  • Ratio - 1:1
  • Port Size - 1/4" NPT
  • Port Thread - NPT
  • Elastomers - Nitrile on Dacron
  • Relief - Non-Relieving
  • Output Options - Negative Bias
  • Increased Adjustability - None
  • Exhaust Port - Straight
100+ In Stock
$1,464.00 CAD
$10.00 Shipping
FAIRCHILD Model 20 Pneumatic Precision High Capacity Volume Booster, 1:1 Ratio, 3/8" NPT, Tapped Exhaust, By-Pass Valve view more
  • Ratio: 1:1

  • Supply Pressure (Maximum): 250 psig, 17 bar, 1700 kPa

  • Pipe Size: 3/8" NPT

  • Options:

    • Tapped Exhaust
    • By-Pass Valve

  • Materials of Construction:

    • Body & Housing: Aluminum
    • Trim: Zinc Plated Steel, Brass
    • Diaphragms: Nitrile on Dacron Fabric
    100+ In Stock
    $1,762.00 CAD
    $10.00 Shipping
    • Ratio - 1:3
    • Port Size - 1/4" NPT
    • Port Thread - BSPT (Tapered)
    • Elastomers - Nitrile on Dacron
    • Relief - Non-Relieving
    • Output Options - Negative Bias
    • Increased Adjustability - None
    • Exhaust Port - Straight
    100+ In Stock
    $2,195.00 CAD
    $10.00 Shipping
    • Ratio - 4:1
    • Port Size - 1/2" NPT
    • Port Thread - NPT
    • Elastomers - Nitrile on Dacron
    • Relief - Relieving
    • Output Options - None
    • Increased Adjustability - None
    • Exhaust Port - Straight
    100+ In Stock
    $2,329.00 CAD
    $10.00 Shipping

    Specifications

    Ambient Temperature Range

    • -40° to 93° C (-40° to 200° F)

    BSP Connection

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

    Elastomers

    • Fluorocarbon (Viton)
    • Nitrile on Dacron
    • Silicone

    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

    • 11 scfm (18.7 m³/hour)
    • 12.8 to 18.7 m³/hour
    • 7.5 scfm (12.8 m³/hour) where Downstream Pressure is psig: 5 (bar: 0.35, kPa: 35) Above Output Pressure Set Point of psig: 20 (bar: 1.5, kPa: 150)
    • 7.5 to 11 scfm

    Flow Capacity

    • 45 scfm
    • 45 scfm (76.5 m³/hour) at psig: 100 (bar: 7, kPa: 700) Supply, psig: 20 (bar: 1.5, kPa: 150) Output
    • 76.5 m³/hour (30)

    NPT Connection

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

    Output Pressure - Maximum

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

    Ratio

    • 1:1
    • 1:2
    • 1:3
    • 1:4
    • 1:5
    • 1:6
    • 2:1
    • 3:1
    • 4:1
    • 5:1

    Relief

    • Non-Relieving
    • Relieving

    Sensitivity

    • 1” WC (2.54 cm)
    • 1/2” WC (1.27 cm)
    • 1/4” WC (0.64 cm)
    • 1-1/2” WC (3.8 cm)
    • 1-1/4” WC (3.18 cm)
    • 3/4” WC (1.9 cm)

    Supply Pressure - Maximum

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

    Supply Pressure Effect

    • bar: 0.007 to 0.041
    • kPa: 0.7 to 4.1
    • psig: 0.1 to 0.7

    Trim Material

    • Brass
    • Zinc-Plated Steel

    Vent

    • Straight
    • Tapped Exhaust

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