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Murphy 0-200 PSI Pressure Swichgage 2.5 Oil Sealed 25P-OS-200

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Murphy 0-200 PSI Mechanical Pressure Swichgage 2.5 in. with Plated Steel Case - Oil Sealed - 25P-OS-200

Product Condition: NEW
Murphy Mechanical Pressure Swichgage Oil Sealed 200 PSI with Plated Steel Case 25P-OS-200
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

SSL Cerficate

The Murphy 0-200 PSI Mechanical Pressure Swichgage 2.5" 25P-OS-200 is a diaphragm-actuated, pressure-indicating gage with a built-in electrical switch. This swichgage is used for tripping alarms and/or shutdown devices. The gage mechanism is enclosed in a steel case coated to resist corrosion. A polycarbonate, break-resistant lens and a polished, stainless steel bezel help protect this rugged, built-to-last instrument. Accuracy and protection from moderate overpressure is assured by a unique, unitized diaphragm chamber. A built-in pulsation dampener helps eliminate pointer flutter and is removable for cleaning.

The gage pointer acts as a pressure indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contacts are grounded through the Swichgage case and have self-cleaning motion to ensure electrical continuity. The gage pointer makes with an adjustable contact to complete a pilot-duty circuit. Designed to protect engines/equipment in oil field, marine, irrigation, construction and trucking applications to monitor engine lube pressure, water pump pressure, hydraulic pressure and air pressure.



  • 2-1/2 inch/64 mm Dial
  • Steel Case Coated to Resist Corrosion
  • Polycarbonate, Break-Resistant Lens
  • Polished Stainless Steel Bezel
  • Combination Indicating Gage and Limit Switch
  • Switch Can Activate Alarms and/or Shutdown Equipment
  • Exceeds SAE Standards
  • OS = Oil Sealed (Silicone Oil)



  • Part No.: 25P-OS-200
  • Range: 0-200 psi (1.4 MPa) [14 bar]
  • Maximum Pressure: 2 x scale
  • Standard Settings: 50 psi (345 kPa) [3.0 bar]
  • High Settings: 150 psi (1 MPa) [10 bar]
  • Dial: White on black, dual scale; U.S.A. standard scale is psi/kPa
  • Case: Plated steel; mounting clamp included (except for direct mount models)
  • Bezel: Polished stainless steel
  • Lens: Polycarbonate, high-impact
  • Oil: Silicon Oil
  • 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
  • Adjustable Limit Contact: SPST contact; pilot- duty only, 2 A @ 30 VAC/DC; Normally Close (NC) when the low limit is met. Normally Open (NO) when pointer is in normal operating range. Contacts are gold flashed silver
  • Limit Contact Adjustment: by a 1/16 in. hex wrench thru 100% of the scale
  • Limit Contact Wire Leads: 18 AWG (1.0 mm2) x 12 in. (305 mm)
  • Unit Weight: 11 oz. (0.31 kg)
  • Unit Dimensions: 4-3/4 x 4-3/4 x 2-3/4 in. (121 x 121 x 70 mm)

Additional Information

Product Condition NEW
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