PG Differential Pressure Guage (previously 200DPG) - 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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PG Piston Gauge (previously 200DPG)

(previous generation: 200DPG and 200DPH:P)

Precise DP Measurement for Liquids.

            If you are looking for high accuracy, differential pressure measurement for liquids, the PG is a great choice. With a system pressure rating of up to 6,000 psi and pressure ranges that vary from 3.5 to 1,000 psid, this gauge has an enormous amount of applications. Our piston gauges lead the industry because of our advanced seal design that utilizes PTFE ring. This reduces the ability for media to travel from high port to low port, through the gauge. Without this, contamination between ports and false readings could occur.

PG Gauge


  • 2-3 Week Lead Production time
  • High Volume OEM or Distributor? Email us today:

Range (PSI) *

Wetted Material *

Rubber Seals

Dial Size *

Connection Location *

Electrical Switch? *

Additional Options


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  • Highest System Pressure Offered (6000 psi)
  • Differential Pressure Ranges from 3.5 to 1,000 psid
  • SPST Rating 100V/0.5A, SPDT 30V/0.3A unless requested otherwise
  • Great for Filters and Hydraulics
  • Lowest Cost Precision Gauge
  • Panel Mountable Dials and Mounting Brackets
  • Color Bands, Liquid Fills, and Follower Pointers
  • Electrical Switches 
  • 150+ Pressure Ranges

CAD Files

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

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

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 PG is…

an industry leader specifically because of the design of our piston. Unlike the competition, our pistons feature a specially design PTFE ring that reduces the ability for media to travel from high port to low port, through the gauge. Without this, contamination between ports and false readings could occur.

The PG 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

Application Examples

Balancing Valves
Bag Housings
Directly into Filter Head