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Model 4800A High Flow Pneumatic Volume Booster
Brand: Fairchild Industrial ProductsRotork Fairchild’s M4800A is a High Flow Pneumatic Volume Booster specifically designed for Valve and valve actuation systems.
With its Cv of 9 in both forward and exhaust modes, this pilot operated booster provides fast response and accurate control for valve actuation.
In addition, the M4800A has an integral bypass valve, for optimum tuning and adjustment, even while in operation, to obtain maximum performance on opening and closing times with minimal overshoot or oscillation.
In its pilot operated regulator design, the M4800A handles up 250 psig, [17.0 BAR], (1,700 kPa) supply pressure and delivers an output pressure up to 150 psig [10.0 BAR] (1,000 kPa).
The Fairchild Model 4800A Booster provides a flow capacity of 500 SCFM (850 m3/HR), which equates to a Cv factor of approximately 9 in both forward and exhaust modes.
Features- Cv = 9; Flow capacity of 500 SCFM (850 m3/Hr)
- Ratio Accuracy of 0.5%
- Fixed deadband between the operation of the supply valve and exhaust valve
- Integral bypass needle valve
- Soft seat supply and exhaust valve
- Pressure balanced supply valve
- Damped diaphragm control chamber
- Two accessory ports connected to the outlet chamber
- Tapped exhaust port.
Specifications
Ratio
- 1:1
Pipe/Port Size
- 3/4"
- 1"
Pipe/Port Thread Type
- NPT
- BSPP
- BSPT
Approvals
- CRN
Hazardous Areas
- Acceptable in Zones 1–2 (gas, Groups IIA & IIB) and Zones 21–22 (dust).
Max. Supply Pressure
- 250 psig : 17.0 bar : 1700 kPa
Max. Output Pressure
- 150 psig : 10.0 bar : 1000 kPa
Ambient Temperature Limits
- -40° F to +200° F (-40° C to 93.3° C)
Remote Pressure Sensor
- No Feedback Port
- Feedback Port
Body & Housing Material
- Aluminum
Elastomers Material
- Nitrile
- Viton (Fluorocarbon)
Diaphragm Material
- Nitrile on Dacron
Trim Material
- Zinc-Plated Steel
- Stainless Steel
Flow Rate
- 5.0 Cv
- 9.0 Cv
Mounting
- Bracket
Enclosure, Body Material
- Aluminum
Flow Capacity
- 500 scfm (850 m³/hour) at psig: 100 (kPa: 700, bar: 7)
Ambient Temperature Range
- -40° to 93.3° C (-40° to 200° F)
BSP Connection
- 1" BSPP Female
- 1" BSPT Female
- 3/4" BSPP Female
- 3/4" BSPT Female
Elastomers
- Fluorocarbon
- Nitrile
Signal or Output Pressure - Maximum
- psig: 150 (kPa: 1,000, bar: 10)
Trim Material
- Stainless Steel
- Zinc-Plated Steel
Diaphragm Material
- Nitrile on Dacron
Ratio
- 1:1
Supply Pressure Effect
- psi: 0.10 (kPa: 0.7, bar: 00.7) for psi: 100 (kPa: 700, bar: 7) Change in Supply Pressure
Environmental Protection
- Acceptable for use in Zones 1 & 2 for Gas Atmosphere, Groups IIA & IIB & Zones 21 & 22 for Dust Atmospheres
NPT Connection
- 1" NPT Female
- 3/4" NPT Female
Ratio Accuracy
- 0.5 % of psi: 100 (kPa: 700, bar: 7) Output Span
Exhaust Capacity - Relieving Units Only
- 100 scfm (170 m³/hour)
Supply Pressure - Maximum
- bar: 17
- kPa: 1,700
- psig: 250
Approvals & Certifications
- CRN - Canadian Registration Number
