DG Differential Pressure Gauge - Differential Pressure Plus
Differential Pressure Plus manufacturers differential pressure gauges for monitoring filter status, liquid level, flow rate measurement in venturis, and much more.
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DG Diaphragm Gauge

Precise Differential Measurement.

          From liquid levels, flow rates, pressure balancing, and filtration, the DG differential pressure gauge is an extremely versatile. With a system pressure rating of up to 1,500 psi and differential pressure ranges that vary from 1-60 psid, this gauge is extremely robust. The convoluted diaphragm in the DG is improved from the 200DGR rolling style. This design allows the gauge to take complete reverse differential pressure and also gives the gauge finer pressure readings on the low end.


Precision Gauge Quote Form
Sometimes you just don’t know…


  • System Pressure Ratings up to 1,500 PSID
  • Differential Pressure Ranges from 1-60 psid
  • Designed to Have a “Zero-Center Dial”
  • Wide Spread Usage in Cryogenic Liquid Level
  • Built into a Vertically Calibrated Design
  • Panel Mountable Dials and Mounting Brackets
  • Color Bands, Liquid Fills, and Follower Pointers
  • Electrical Switches options
  • 150+ Pressure Ranges

300DGC CAD Files

For Further CAD files, please email us for quick response.

Differential Pressure Plus designs and manufacturers differential pressure gauges and filter indicators. Our main industries are cyrogenic storage for liquid oxygenm nitrogen, and natural gas. Filtration of water, oil, and other gases and liquids. Leak detection systems for large tanks and pipelines. Flow rates on venturis and other flow type devices. We are located in the United States and have been manufacturing since 1991. We also make a like of 4-20mA transmitters and entire line of testing equipment. Our backflow test kits are used to test back flow preventers around the world

Our DGs…

is perfect for liquid level and flow rates through differential pressure. It can also be used on filtration and has the ability to monitor low differential pressure ranges. The convoluted diaphragm adds safety from the possibility of reverse pressures from back flushes on filter systems.

The DG Differential Pressure Gauge can:

  • Be made into a portable kit
  • Be pre-outfitted with a manifold
  • Be machined from Aluminum, Brass, or Stainless Steel
  • Be fully customized with over a million design combinations

Electrical Options


All standard gauges can be outfitted with electrical switches. These outputs are great for triggering back-flush pumps or notifying operators of critical pressure points, such as when to change a filter. Electrical outputs can come with switch and a gauge dial face, switch only with no gauge face

Application Examples

Zero Center Dials for Balancing
Custom Vertical Calibrations
Backflow Certification Equipment
Balancing Valves
Bag Housings
Directly into Filter Head