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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
91052
FAIRCHILD Model 91 High Pressure Selector Relay, 1/4" NPT
21 In Stock
$380.55USD
$7.94 Shipping
91052U
FAIRCHILD Model 91 High Pressure Selector Relay, 1/4" BSPT (Tapered)
3 - 5 weeks
$380.55USD
$7.94 Shipping
91052J
FAIRCHILD Model 91 High Pressure Selector Relay, 1/4" NPT, Fluorocarbon (Viton) Elastomers
8 - 12 days
$456.02USD
$7.94 Shipping

Specifications

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), Maximum

Signal or Output Pressure - Maximum

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

Trim Material

  • Brass

Vent

  • Straight