Pressure-Switch

Features low water cut-off switch to shut off pump at 12 P.S.I. to prevent overheating damage to submersible well pumps. Recommended for submersible pumps. Diaphragm actuated - 1/4" 18 NSF internal threads. 1 per box.No. FSGSJ20M4BP: Pressure setting 20 to 40 P.S.I.No. FSG2J21M4BP: Pressure setting 30 to 50 P.S.I.