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Square water pump pressure switch for control of electrically driven water pumps
Diaphragm actuated
Includes 2 1/4-inch poles
18 NPSF internal thread with 1/4 opening
220 PSI maximum pressure rating with low pressure cut-off at 40 PSI

Square D by Schneider Electric FSG2J24M4CP 40-60 PSI Pumptrol Water Pressure Switch with Low Pressure Cut-Off

Standard pressure switch with low pressure cutoff.