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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 makes the Model 91 the logical choice in dead-end or low-flow applications such as precision control loops.
Fairchild Model 91 High-Pressure Selector Relay - SKU: 91052
The Fairchild Model 91 High-Pressure Selector Relay is designed for precise and reliable performance in high-pressure applications.
Key specifications include:
- Maximum Signal Pressure
- 200 psig
- 14.0 bar
- 1400 kPa
- Minimum Switching Differential
- < 0.1 psig (0.007 bar, 0.7 kPa)
- Maximum Differential Between Signals
- 100 psig (7.0 bar, 700 kPa)
- Pipe Size
- 1/4” NPT
Constructed with a durable aluminum alloy body, brass trim, and a Dupont Fairprene-coated fabric diaphragm, this relay ensures longevity and efficient operation under demanding conditions.
- Small, rugged design suitable for installation where space is limited.
- Soft seat construction to assure positive shutoff.
- Low selection differential to allow precise control of switching.
- Fast response that is suitable for control in critical loops.
- Automatic switching that eliminates manual monitoring of signal pressure.
Displaying prices & availability for Ohio, United States in CAD. Change location.
Models matching criteria: 3
FAIRCHILD Model 91 High Pressure Selector Relay, 1/4" BSPT (Tapered)
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- 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" BSPT
- Material of Construction:
- Body: Aluminum Alloy
- Trim: Brass
- Diaphragm: Dupont Fairprene-coated fabric
100+ In Stock
$247.00
CAD
$10.00 Shipping
FAIRCHILD Model 91 High Pressure Selector Relay, 1/4" NPT
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- 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
50+ In Stock
$761.00
CAD
$10.00 Shipping
FAIRCHILD Model 91 High Pressure Selector Relay, 1/4" NPT, Fluorocarbon (Viton) Elastomers
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- 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: Flourocarbon
25+ In Stock
$1,119.00
CAD
$10.00 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) - Max.
Signal or Output Pressure - Maximum
- bar: 14
- kPa: 1,400
- psig: 200
Trim Material
- Brass
Vent
- Straight
