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Model 91 High Pressure Selector Relay
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.
Specifications
BSP Connection
- 1/4" BSPT Female
Ambient Temperature Range
- -40° to 93° C (-40° to 200° F)
Differential Between Signals - Maximum
- bar: 7
- kPa: 700
- psig: 100
Trim Material
- Brass
Differential Between Signals - Minimum
- > psig: 0.1 (bar: 0.007, kPa: 0.7)
Enclosure, Body Material
NPT Connection
Elastomers
Signal or Output Pressure - Maximum
Mounting
Relief
Vent
Sensitivity
Documentation
Data Sheets
- Data Sheet - Fairchild 90 and 91 pdf 302 KB
Catalogs
- Catalog - Fairchild Product Line pdf 37.9 MB
Certifications & Approvals
- Certifications & Approvals - Fairchild CRN Approvals 2010 pdf 10 KB
Installation Instructions
- Fairchild 90 Low and 91 High Pressure Selector Relay pdf 364 KB
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