Reading Technologies, Inc. N32-W1-DPI Differential Pressure Indicator

The Reading Technologies, Inc. N32-W1-DPI Differential Pressure Indicator is a compact replacement indicator for Reading Technologies’ 20–700 SCFM air-treatment units, delivering a straightforward differential-pressure readout across filtration or separation modules. Also cataloged as N32-W1-DPi and available in a food-grade variant (N32-W1-DPi-FG), this device enables maintenance personnel to gauge when to service or replace elements based on pressure drop. Common applications include monitoring pressure loss across coalescing/separator assemblies in compressed-air systems to protect downstream equipment and maintain filtration efficiency. Weighing approximately 0.12 lb, the N32-W1-DPI is designed specifically for RTI units in the 20–700 SCFM range and is described in distributor catalogs as a “Replacement Differential Indicator” for RTI equipment. The indicator is intended to read differential pressure rather than function as a full gauge, providing a simple, reliable signal to trigger maintenance actions without introducing complex instrumentation.