81452P Fairchild Model 81 Multi-Stage Pressure Regulator

81452P
$394.54 / Each
  • Product Type: Multi-Stage Pressure Regulator
  • Accuracy: 0.05 psi
  • Ambient Temperature: -40 F (-40 C) to 200 F (93.3 C)
  • Base Model: 81452
  • Body Material: Die Cast Aluminum
  • Elastomer: Nitrile on Dacron
  • Exhaust Capacity: 5.5 SCFM [9.4m3/Hr] downstream pressure 5 psi above 20 psi setpoint
  • Exhaust Type: Straight (standard)
  • Flow Capacity: 50 SCFM
  • Max. Outlet Pressure: 150 PSIG
  • Mounting: Bonnet mount 1-1/4-18 UNEF-2B
  • Operator: Knob (standard) 1-7/8 in OD
  • Options: [P] bonnet mount
  • Orifice: Sapphire
  • Pipe Size: 1/4 FPT
  • Port Type: NPT
  • Pressure Range: 0.5-100 psi
  • Sensitivity: < 0.1 in WC
  • Supply Pressure: 20-150 psi
  • Trim: Stainless Steel Brass Aluminum and Plated Steel
  • Refine Search: Industrial
  • Diaphragm Material: Nitrile on Dacron
  • Flow Capacity: 50 SCFM at 20 psig
  • Mounting: Bonnet Mounting
  • Port Size: 1/4 in.

Fairchild Model 81 Multi-Stage Pressure Regulator, 0.5-100 psi adjust, 20-150 psi [1.5-10 BAR] supply 50 SCFM [85m3/Hr]@100 psi/20 psi set, 1/4 FPT line, 1/8 gauge port, Nitrile on Dacron, bonnet mount.

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Product Description

The Rotork Fairchild Model 81 is a high flow two stage precision pressure regulator designed for applications that require high performance, low droop and accurate process control. The Model 81 combines a pilot control system with a basic force balance system to provide accurate output pressure regulation for both highly sensitive instrumentation and control circuits and in equipment requiring high flow with precise control. The Fairchild Model 81 features control sensitivity of less than 0.1 in water column, very low consumption and high accuracy to deliver consistent and reliable precision accuracy to maintain your desired set point regardless of supply pressure changes or conditions. The Fairchild Model 81 pneumatic regulator will handle a 250 psig [17 BAR] maximum supply pressure and offers five (5) output pressure ranges from 0-20 psig [0-1.5 BAR] (0-150 kPa) up to 1-100 psig [0.05-7 BAR] (7-700 kPa). The Model 81 precision regulator has a flow capacity of 50 SCFM [136m3/hr].
  • Well suited for high accuracy applications
  • Minimizes any droop from downstream flow
  • Responsive operation with less exhaust time
  • Sapphire Orifice provides precise control of pilot control air flow
  • Efficient operation with no losses of air or gas media
NOTES: Oil free air must be applied to the regulator. Use a filter to remove dirt and entrained liquid in the air line ahead of the regulator. If an air line lubricator is used, it MUST be located downstream of the regulator, to avoid interference with regulator performance.

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Dimension Drawing

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