Sight Tube

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

Sight Tube


The Backflow Sight tube is used for DCVA’s and can be used to quickly check calibration. To review how to complete these tests please go to the Backflow Pro or Backflow Mini product pages and look under the “Calibration” section

The tube uses solid brass fittings and clear tubing for compatibility

Available on backorder