Model 100 High Flow Pressure Regulator

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The Fairchild 100 High Flow Pressure Regulator is designed for use in control systems requiring unusually high flow capacities. Like many of the Fairchild regulators, the compensating action of the inner valve assembly of the Fairchild 100 allows complete stabilisation of downstream pressure.


  • Sensitivity of 1/2” (1.27 cm) of water.
  • Responds to equally minute changes in downstream pressure.
  • Venturi-type aspirator tube to aid stability and minimize downstream pressure droop under flowing conditions.
  • Balanced supply valve to minimize effect of supply pressure variation.
  • Control Chamber isolates the control diaphragm to eliminate hunting and buzzing.
  • Operates equally well on shop air or clean, dry instrument air.
  • May be serviced and maintained without removal from line.
  • Mounting Bracket available

Operating Principles

This high quality unit, which operates as efficiently on shop air as on dry instrument air, offers unusual versatility and economy. The Fairchild 100 is capable of providing precise control of set point and good sensitivity under high flow conditions, and is the ideal choice for many demanding applications, including main header regulator control, large nip roll loading, and clutch brake operation.



Maximum Supply Pressure
250 psig, [17.0 BAR], (1700 kPa)
Flow Capacity
In excess of 1500 SCFM (2550 m3/HR) (100 psig, [7.0 BAR], (700 kPa) supply, 1 1/2” NPT Conn. 40 psig, [2.8 BAR], (280 kPa) setpoint
Exhaust Capacity
44 SCFM (75 m3/HR) for downstream pressure 5 psig, [.35 BAR], (35 kPa) above 20 psig set pressure
Supply Pressure Effect
Less than 0.1 psig, [.007 BAR], (.7 kPa) per 100 psig, [7.0 BAR], (700 kPa) change
0.5” (1.27 cm) Water Column
Ambient Temperature Limit
-40°F to +200°F, (-40°C to +93.3°C)
Hazardous Locations
Acceptable for use in Zones 1 and 2 for gas atmosphere; Groups IIA and IIB and Zones 21 and 22 for dust atmospheres
Materials of Construction
Body: Aluminum
Trim: Zinc Plated Steel, Brass
Diaphragms: Buna N

Catalogue PDF: application/pdf
Operational PDF: application/pdf
Located in: Regulators

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