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Murphy 20P-75 Swichgage®

FW Murphy , 20P-75
QC Supply Part #: 120385
Shipping: Standard
Availability: In stock

The Swichgage can be used to trip alarms and/or shut-down devices.


The Murphy 20P-75 Swichgage® can be used to trip alarms and/or shut-down devices. The 20 Series (2" dial) Swichgages® are diaphragm-actuated, pressure-indicating gauges, with built-in electrical switches.


  • Gauge mechanism enclosed in a coated steel case that resists corrosion
  • A polycarbonate, break-resistant lens and a polished, stainless steel bezel help protect this rugged, built-to-last instrument
  • A unique, unitized diaphragm chamber ensures accuracy and protection from moderate overpressure
  • Built-in pulsation dampener helps eliminate pointer flutter and is removable for cleaning
  • Guage pointer acts as a pressure indicator
  • Contacts are grounded through the Swichgage® case and have self-cleaning motion to ensure electrical continuity
  • Internal snap-acting SPDT switches

Applications: The Swichgage® was specifically designed to protect engines/equipment in Oil Field, Marine, Irrigation, Construction and Trucking applications by monitoring Engine Lube Pressure, Water Pump Pressure, Hydraulic Pressure, Air Pressure, etc.

Brand FW Murphy
Manufacturer Part Number 20P-75

Manuals & Resources


Customer Reviews

  • 5 Stars

    Great product

    Review by on Jul 23, 2015

    I bought this product online, it shipped quick, installed right away and it is functioning perfectly!! Thanks QC Supply!

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