The DUNGS GAO (Automatic Reset), GMH (High Manual Reset), and GML (Low Manual Reset) A4 pressure switches are adjustable pressure switches for automatic gas burning equipment controls. A4 pressure switches are suitable for making and/or breaking a circuit relative to changes in medium pressure relative to the set point. The set point can be set in the field by an adjustable dial with an integrated scale. Test nipple integrated in metal housing to verify setpoint.

Application:

The DUNGS GAO, GMH, and GML A4 pressure switches are recommended for industrial and commercial heating applications with 1/4" NPT pipe connections. The GAO, GMH, and GML A4 pressure switch is suitable for natural gas, propane, butane, air and other inert gases. Pipe mount; Calibrated for vertical mounting, set point may change by 0.2" W.C. when mounted otherwise; Screw terminals with 12" NPT Conduit connection; Neon light included.