Pressure Switch - Water Systems, Gard-It, Max 3-20 PSI, Factory Setting 12, Static PSI 150

Wired in series with a conventional Furnas pressure switch. When failure of the water or air supply causes system pressure to fall considerably below the cut-in point of the regular pressure switch, the GARD-IT will disconnect the pump motor. When the water or air supply returns, the system is placed in automatic operation by depressing the manual reset lever until system pressure exceed the GARD-IT cut off level.