The Differential Pressure Difference

A leader in the manufacturing of differential pressure gauges. The First Family of Differential Pressure Gauges to offer a choice of models to meet economic demands of the filter industry. For the first time, the end user can decide how much to spend on filter condition indicators.

Backflow Test Kit

Differential Pressure Plus' NEW TK-10 - Backflow Preventer Test Kit

Low Cost Indicators

Filtration systems require monitoring to maintain the performance levels guaranteed by the manufacturer and the continued expectations of the user.

Precision Gauges

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

Ultra Precision Instruments

Differential Pressure Plus, Inc., has established itself as the leading manufacturer of high-quality, low-cost ultra precision instruments.