Series DPTG-3 Combination Pressure and Temperature Gauges are used in commercial, residential, and institutional HVAC applications. It is a center, back-entry type model with a black enamel steel case, Kostil Polymer window, 1/4 in. NPT connection, copper alloy Bourdon tube pressure element, and bimetal spiral spring. Accuracy is ASME, Type B. Available in various pressure rating scales.