Murphy 20dp

Murphy by Enovation 20DP / 25DP / A20DP / A25DP Pressure Gauges

• Monitors Engine Oil and Fuel Filters
• Actuates Alarm or Shutdown System When Filter Becomes Clogged
• Combination Indicating Gage and Limit Switch
• Actuates Filter Backwash
• Signals Coolant Loss or Aeration On Engine Water Pump

Dial: White on black, dual scale; U.S.A. standard scale is psi/kPa. Other scales available–inquire.


  • 20DP and 25DP Series: plated steel.
  • A20DP and A25DP Series: polycarbonate.

Bezel: Polished stainless steel, standard; others are available (see How to Order).

Lens: Polycarbonate, high-impact.

Temperature Range:

  • Ambient: -40°F (-40°C) thru 150°F (66°C).
  • Process: -40°F (-40°C) thru 250°F (121°C).

Process Connection: 1/8-27 NPTM brass.

Sensing Element: Beryllium copper diaphragm.

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Palmer Johnson is an authorized distributor and service provider for Murphy by Enovation products.

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