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Murphy 0-30 H2O Vacuum Air Filter Restriction Swichgage 2.5" A25VWC-30

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Murphy 0-30 H2O Vacuum Mechanical Air Filter Restriction Swichgage 2.5 in. w/ Polycarbonate Case - A25VWC-30

Product Condition: NEW
Murphy 0-30 H2O Vacuum Mechanical Air Filter Restriction Swichgage with Polycarbonate Case A25VWC-30
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

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The Murphy 0-30 H2O Vacuum Mechanical Air Filter Restriction Swichgage 2.5 inch A25VWC-30 is a direct reading gage for use with dry air filters. As the filter deteriorates, air inflow will decrease creating increased vacuum between the air filter and the carburetor. The vacuum is monitored by the Swichgage instrument which gives a visual readout of the filter condition. A built-in adjustable limit contact can operate an alarm to alert the operator when it is time to service or replace the
air filter element. This model has a glass filled polycarbonate case with range of 0 to 30 in. (0-76 cm) of water restriction.

The A25VWC-30 Swichgage instrument can be used on any type of dry air filters for Gasoline or diesel engines. Particularly useful for engines operated in dusty environments such as agricultural and construction equipment, industrial engines and mobile equipment. Unlike traditional pop-up or latch-up type indicators, the VWC Series gives constant readout in meaningful terms of the changing condition of your filter.



  • Stainless steel Bezel
  • Dual Scale Reading
  • Dependable and Accurate
  • Dash Mounting for Easy Viewing
  • Glass Filled Polycarbonate Case
  • Indicating Gage and Limit Switch in One
  • Use the Switch to Activate Alarms and/or to Shut Down Equipment
  • 2-1/2 in. (64 mm) Dial Water Column Swichgage for Detecting Restricted Dry Air Filters



  • Part No.: A25VWC-30
  • Range (H2O Vacuum): 0-30 in. (0-76 cm)
  • Contact Setting: 20 in. (508 mm)
  • Contact Rating: 2 A @ 30 V AC/DC
  • Contact Adjustment: Allen head
  • Dial: White on black
  • Clamp: Metal
  • Mounting Hole: 2-11/16 in. (68 mm)
  • Maximum panel thickness: 1/4 in. (6 mm)
  • Port: Brass 1/8-27 NPT
  • Bezel: Stainless steel
  • Case: Glass filled polycarbonate
  • Lens: Polycarbonate
  • Mounting Studs: 10-32 UNF
  • Calibration: ± 3 in. (76 mm) H2O across scale
  • Unit Weight: 10 oz (311 g)
  • Unit Dimensions: 4-3/4 x 4-3/4 x 3-1/4 in. (121 x 121 x 83 mm)

Additional Information

Product Condition NEW
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