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Low/High Pressure Selector Relay (M90/M91)

About Low/High Pressure Selector Relay (M90/M91)

Pressure Selector Relay designed to select the lower/higher of two signal pressures to provide a continuous output pressure to a control device.

Technical Specifications
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Lower Pressure Relay (M90)
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Higher Pressure Relay (M91)
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Description

Lower Pressure Selector Relay (M90)

The Model 90 Low Pressure Selector Relay is designed to select the lower of two signal pressures to provide a continuous output pressure to a control device. The Model 90 is recommended for dead end or low flow service in critical applications such as control loops requiring precise, automatic monitoring of signal pressures.

Higher Pressure Selector Relay (M91)

The 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.

 

Benefits

  • Suitable for installation where space is limited.
  • Assures positive shutoff.
  • Allow precise control of switching function.
  • Well suited for control in critical loops.
  • Eliminates manual monitoring of signal pressure.
Features
  • Small, rugged design
  • Soft seat construction
  • Low selection differential
  • Fast response
  • Automatic switching
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