Mid-West 121-AA-00-O(EA)-30P Differential Pressure Gauge with Aluminum Body and Stainless Steel Internals, 1 Switch in General Purpose Enclosure Class1-Div.2 , Piston Type, 3/2/3% Full Scale Accuracy, 2-1/2" Dial, 1/4" FNPT Back Connection, 0-30 psid Rang

Mid-West Instrument piston type differential pressure gauge. Over-range protection to maximum pressure. Weather resistant construction standard. Shatter resistant acrylic lens. A low cost differential pressure gauge for use in measuring the pressure drop across filters, strainers, separators, valves, pumps, chillers, etc., and for local flow indication and control. Proof pressure: two times rated working pressure at ambient temperature. Aluminum body material. Stainless steel internal metal part. Buna-N seal material. 1/4-inches FNPT back connections, 2-1/2-inches uni-directional round dial, weather resistant engineered plastic case, accuracy +/-2 percent full scale (ascending). One switch in general purpose enclosure, division 2 hazardous locations (1) (2). SPDT 3W, 0.25 Amp, 125 VAC/VDC (standard) (switch adjustable range of 15-95 percent).