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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
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
