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Model 4000A Pneumatic Pressure Regulator

Brand: Fairchild Industrial Products
The Rotork Fairchild Model 4000A is a no bleed high flow precision pressure regulator designed for applications that require high performance, very low consumption and accurate process control.

The Model 4000A pneumatic regulator features control sensitivity of less than 0.5" water column, minimal consumption and high flow capacity to deliver consistent and reliable precision accuracy to maintain your desired set point regardless of supply pressure changes or conditions. 

The Fairchild Model 4000A pressure regulator will handle a 250 psi, 17 BAR maximum supply pressure and offers five (5) output pressure ranges from 0.5-10 psi, 0.03-0.7 BAR, 3-70 kPa up to 5-250 psi, 0.35-17 BAR, 35-1,700 kPa.

The Model 4000A has a flow capacity of up to 150 SCFM, 255 m3/hr.

Benefits
  • Excellent choice for high flow precision applications
  • Allows for use in high accuracy applications.
  • Provides high forward and exhaust flows.
  • Minimizes air consumption.
  • Minimizes the effect of any supply pressure variation.
  • Compensates for downstream pressure droop under flow conditions.
  • Eliminates hunting and buzzing.
  • Allows you service the Model 4000A without removing it from the line.
Features
  • Flow Capacity up to 150 SCFM, 255 m3/hr
  • Control sensitivity of 1/2" water column
  • Large Supply and Exhaust Valves
  • Soft Supply and Exhaust Valve
  • Balanced Supply Valve
  • Aspirator Tube
  • Separate Control Chamber isolates the diaphragm from the main flow
  • Unit construction
The Rotork Fairchild Model 4000A is a no bleed high flow precision pressure regulator designed for applications that require high performance, very low consumption and accurate process control.

The Model 4000A pneumatic regulator features control sensitivity of less than 0.5" water column, minimal consumption and high flow capacity to deliver consistent and reliable precision accuracy to maintain your desired set point regardless of supply pressure changes or conditions. 

The Fairchild Model 4000A pressure regulator will handle a 250 psi, 17 BAR maximum supply pressure and offers five (5) output pressure ranges from 0.5-10 psi, 0.03-0.7 BAR, 3-70 kPa up to 5-250 psi, 0.35-17 BAR, 35-1,700 kPa.

The Model 4000A has a flow capacity of up to 150 SCFM, 255 m3/hr.

Benefits
  • Excellent choice for high flow precision applications
  • Allows for use in high accuracy applications.
  • Provides high forward and exhaust flows.
  • Minimizes air consumption.
  • Minimizes the effect of any supply pressure variation.
  • Compensates for downstream pressure droop under flow conditions.
  • Eliminates hunting and buzzing.
  • Allows you service the Model 4000A without removing it from the line.
Features
  • Flow Capacity up to 150 SCFM, 255 m3/hr
  • Control sensitivity of 1/2" water column
  • Large Supply and Exhaust Valves
  • Soft Supply and Exhaust Valve
  • Balanced Supply Valve
  • Aspirator Tube
  • Separate Control Chamber isolates the diaphragm from the main flow
  • Unit construction
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Specifications

Brand

Supply Pressure Effect

  • Less than 0.007 bar
  • Less than psi: 0.01 (bar: 0.0007, kPa: 0.7)
  • Less than psig: 0.1 (bar: 0.007, kPa: 0.7)
  • psig: 0.1 (bar: 0.007, kPa: 0.7) for a psig: 100 (bar: 7, kPa: 700) Change in Supply Pressure

Supply Pressure - Maximum

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

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

Flow Capacity

  • 150 scfm (255 m³/hour)
  • 255 m³/hour

Relief

  • Relieving

Pressure Range

  • bar: 0.034 to 2.04
  • bar: 0.068 to 4.08
  • bar: 0.136 to 10.20
  • bar: 0.34 to 27.20
  • bar: 0.35 to 17
  • kPa: 13.6 to 1,020
  • kPa: 3.4 to 204
  • kPa: 3.5 to 1,700
  • kPa: 34 to 2,720
  • kPa: 6.8 to 408
  • psi: 0.5 to 30
  • psig: 0.5 to 250
  • psig: 1 to 60
  • psig: 2 to 150
  • psig: 5 to 400

Sensitivity

  • 1/2 inH₂O (1.27 cm)

Media

  • Compressed Air
  • Gas

Vent

  • Straight
  • Tapped Exhaust

Exhaust Capacity - Relieving Units Only

  • 40 scfm
  • 40 scfm (65 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

Elastomers

  • Fluorocarbon (Viton)
  • Nitrile on Dacron

NPT Connection

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

Enclosure, Body Material

  • Aluminum

Ambient Temperature Range

  • -40° to 93° C (-40° to 200° F)

Trim Material

  • Brass
  • Zinc-Plated Steel

Environmental Protection

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

Actuator Type

  • Knob Adjust
  • Tamper-Proof
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