Request a Quote

Please fill out the following form below.

Dwyer Differential Pressure Gauge

Rate this product
SKU: Select an option to display SKU

* Required Fields


Click to Enlarge Image



  • High accuracy, guaranteed within 2% of full scale
  • Wide choice of 81 models available
  • Checks inhalation and exhalation breathing efforts of SCUBA regulators
  • Checks air filters by measuring the pressure drops indicating when filter needs replacement
  • To measure air velocity in determining volume of flow
  • To determine flow by measuring the pressure drop
  • Relief plug opens at approximately 25 PSIG (1.72 bar), standard gauges only


  • Service: Air and non-combustible, compatible gases
  • Housing: Die cast aluminum case and bezel, with acrylic cover. Exterior finish is coated gray to withstand 168 hrs salt spray corrosion test
  • Pressure Limits: -20 in. Hg to 15 PSIG (-0.677 bar to 1.034 bar); MP option: 35 PSIG (2.41 bar), HP option: 80 PSIG (5.52 bar)
  • Temperature Limits: 20 to 140°F. (-6.67 to 60°C)
  • Size: 4 in. (101.6 mm) Dia. dial face
  • Mounting Orientation: Diaphragm in vertical position. Consult factory for other position orientations
  • Process Connections: 1/8 in. female NPT duplicate high and low pressure taps - one pair side and one pair back
  • Weight: 1 lbs 2 oz (510 g), MP and HP 2 lbs 2 oz (963 g)
  • Standard Accessories: Two 1/8 in. NPT plugs for duplicate pressure taps, two 1/8 in. pipe thread to rubber tubing adapter and three flush mounting adapters with screws

Note: May be used with Hydrogen. When ordering a Buna-N diaphragm, pressures must be less than 35 PSI.


The Dwyer Differential Pressure Gauges boasts Magnehelic gauge movement that quickly indicates low air or non-corrosive gas pressures — either positive, negative (vacuum) or differential. The design of this Dwyer Differential Pressure Gauge resists shock, vibration, and overloads. The mechanism has no manometer fluid to evaporate, freeze or cause toxic or leveling problems. On top of all these benefits, the Dwyer Differential Pressure Gauges are very competitively priced.


Additional Information

Brand Dwyer
Video No

Product FAQ's

Ask a Question

No questions have been asked for this product. To ask a question please click the Ask a Question button and fill out the form. Thank you.