05700335 – Murphy Differential Pressure Swichgage – Model 25DP-30


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The 25DP-30 Differential Pressure Swichgage is a 2.5″ dual-scale dial, diaphragm-actuated differential pressure-indicating gage, with a built-in electrical switch. This switch is used for tripping alarms and/or shutting down equipment. The 25DP-30, with a pressure range of 0-30 psi, is intended to monitor and indicate oil, fuel or water filter restriction and can reduce the risk of dangerously high pressure which may rupture the filter, resulting in contaminants entering the system. This filter restriction Swichgage will let you know when to change your filter and maintain peak efficiency. On this model, the gage pointer acts as a pressure indicator and as one switch pole which completesa circuit when it touches the adjustable limit contact. Contacts are grounded through the case andhave a self-cleaning motion to ensure electrical continuity.

Estimate available in 20 working days from Italy to Italy

This product may vary on delivery times, as factories do not guarantee production due to lack of raw materials.

Availability: Available on backorder SKU: 05700335 Categories: , Tags: ,
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Product Specifications:

  • Dial:White on black, dual USA/UK standard scale (U.S.A. standard scale is psi/kPa; U.K.standard scale is psi/bar)
  • 2-1/2-inch (64 mm) dial gage
  • Case: Plated steel
  • Bezel: Polished stainless steel, standard; others available
  • Lens: Polycarbonate,high impact
  • Temperature Range:
    • Ambient:-40° to 150° F (-40° to 66° C)
    • Process:-40° to 250° F (-40° to 121° C)
  • Process Connection: 1/8-27 NPTM brass.
  • Sensing Element: Beryllium copper diaphragm.
  • Gage Accuracy: ±3% maximum acrossscale
  • Adjustable Limit Contact: SPST contact; pilot duty only, 2 A @30VAC/DC; closed when thelow limit is met, open when pointer is in normal operating range. Contacts are gold flashed silver.
  • Limit Contact Adjustment: by 1/16 in. hex wrench through 100% of scale.
  • Limit Contact Wire Leads (25DP-30): 18 AWG (1.0 mm2) x 12 in. (305 mm)
  • Unit Weight: 25DP-30: 0.29kg.
  • Unit Dimensions: 25DP-30:4-3/4 x 4-3/4 x 2-3/4 in. (121 x 121 x 70 mm)

Approximate shipping Weight and Dimensions

Part NumberWeightDimension
057003350.29 kg4-3/4 x 4-3/4 x 2-3/4 in. (121 x 121 x 70 mm)


WARNING: This product may expose you to chemicals which are known to the State of California tocause cancer, birth defects or other reproductive harm.


murphy differential pressure swichgage 05700334

Ranges Available*Max. Static PressureMax. Differential PressureContact Setting
0-15 (0-103) [0-1.0]50 (345) [3.4]30 (207) [2.0]10 (69) [0.8]
0-30 (0-207) [0-2.0]150 (1.0) [10]60 (414) [4.0]20 (138) [1.0]
0-50 (0-345) [0-3.5]300 (2.1) [20]100 (690) [7.0]30 (207) [2.0]
0-75 (0-517) [0-5.0]300 (2.1) [20]150 (1.0) [10]50 (345) [3.5]
0-100 (0-690) [0-7.0]300 (2.1) [20]200 (1.4) [14]60 (414) [4.0]

*Value are show in psi, (kPa/MPa) and [bar]. Values in kPa/MPa and bar are mathematical conversion from psi. They do not reflect actual second scale change.

Additional information

Weight0,29 kg


05700335, 25DP-30


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