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Model 91 High Pressure Selector Relay

Brand: Fairchild Industrial Products
The Rotork Fairchild Model 91 High Pressure Selector Relay is designed to select the higher of two signal pressures, and to provide a continuous output pressure (or pressure range) to a controller. 

The ability to precisely control pressure switching and pressure monitoring functions make the Model 91 the logical choice in dead end or low flow applications such as precision control loops.
Features
  • Small, rugged design
  • Soft-Seat construction
  • Low selection differential
  • Fast response
  • Automatic switching
show more
The Rotork Fairchild Model 91 High Pressure Selector Relay is designed to select the higher of two signal pressures, and to provide a continuous output pressure (or pressure range) to a controller. 

The ability to precisely control pressure switching and pressure monitoring functions make the Model 91 the logical choice in dead end or low flow applications such as precision control loops.
Features
  • Small, rugged design
  • Soft-Seat construction
  • Low selection differential
  • Fast response
  • Automatic switching
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Displaying prices & availability for Ohio, United States in USD. Change location or currency.

Models matching criteria: 1
91052
FAIRCHILD Model 91 High Pressure Selector Relay, 1/4" NPT view more
  • Model: 91 High Pressure Selector 
  • Maximum Signal Pressure: 200 psig, 14.0 bar, 1400 kPa
  • Switching Differential (Minimum): Less than 0.1 psig, 0.007 bar, 0.7 kPa
  • Differential between Signals (Maximum): 100 psig, 7.0 bar, 700 kPa
  • Pipe Size: 1/4" NPT
  • Material of Construction
    • Body: Aluminum Alloy
    • Trim: Brass
    • Diaphragm: Dupont Fairprene-coated fabric
Add-Ons Stainless Steel Tag
50+ In Stock
$421.57 USD / each
Min Quantity 1 Max Quantity 1
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Specifications

Brand

Ambient Temperature Range

  • -40° to 93° C (-40° to 200° F)

BSP Connection

  • 1/4” BSPT Female

Differential Between Signals - Maximum

  • bar: 7
  • kPa: 700
  • psig: 100

Differential Between Signals - Minimum

  • > psig: 0.1 (bar: 0.007, kPa: 0.7)

Elastomers

  • Dupont Fairprene-Coated Fabric
  • Fluorocarbon (Viton)

Enclosure, Body Material

  • Aluminum Alloy

Mounting

  • None

NPT Connection

  • 1/4” NPT Female

Relief

  • Relieving

Sensitivity

  • Switching Differential: < 0.1 psi (< 0.7 kPa) - Max.

Signal or Output Pressure - Maximum

  • bar: 14
  • kPa: 1,400
  • psig: 200

Trim Material

  • Brass

Vent

  • Straight
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