A pressure switch senses the system pressure and starts and stops the pump motor automatically at a set pressures. The Gard-it switch is wired in series with a conventional pressure switch. If pump loses it's prime the system pressure will fall considerably below the cut-in point of the regular pressure switch. Gard-it will disconnect the pump motor.
Harvard Pressure Switch with 1/4" FIP connection, 30-50 PSI (40-60 PSI maximum setting), rated 1-1/2 HP @ 115 Volts and 2 HP @ 230 volts single phase $14.00
Furnas Pressure Switch with 1/4" FIP connection, 30-50 PSI (60-80 PSI maximum setting), rated 2 HP @ 115 Volts,
3 HP @ 230 volts single phase,
5 HP @ 230 volts three phase,
1/2 HP @ 115 volts DC,
1/2 HP @ 230 volts DC,
1/4 HP @ 32 volts DC $27.00
The Gard-it switch is wired in series with a conventional pressure switch. If pump loses it's prime the system pressure will fall considerably below the cut-in point of the regular pressure switch. Gard-it will disconnect the pump motor. $68.00