Images are representations only.
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
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) - Max.
Signal or Output Pressure - Maximum
- bar: 14
- kPa: 1,400
- psig: 200
Trim Material
- Brass
Vent
- Straight
