Differential Pressure Plus, Inc., has established itself as the leading manufacturer of high-quality, low-cost differential pressure indicators for the filtration industry.

Our new line of high-precision, high-pressure instrumentation expands our capability into the 2% gauge accuracy range.  Through innovative design and manufacturing methods, these new products firmly establish our price and quality leadership in this specialty industry.  Every precision gauge on this web site is individually tested and serialized.  Certification of calibration is available.

Our improved, close-coupled magnetic rack and pinion design uses high-quality magnets to achieve superior accuracy and the most linear scales in the industry.  Our gauges are calibrated in the ascending pressure mode for the most common applications such as filtration monitoring.  For special requirements, such as leak detection, we can calibrate the gauges in descending mode.