56394 SWITCH, PRESSURE WY. | For domestic water systems, air compressors (not requiring mechanical release valves and where pressure does not exceed 65 psi) and miscellaneous applications for gases and liquids which are not harmful to the Buna-N-diaphragm or the plated steel diaphragm housing. 1/4 in FNPTF connection 1 hp at 120/240 VAC, 1-, 2-, 3-phase. 1/4 hp at 32 VDC. Carded.