Johnson Controls P74EA-8C Pressure Differential Switch, SPDT, Style 13 Conn., 36" Cap.,

Johnson Controls P74EA-8C Pressure Differential Switch, SPDT, Style 13 Conn., 36" Cap.,. The Johnson Controls (PENN) P74 Series Differential Pressure Controls sense differences in pressure between two points, for operating or limit controls. These are desinged to detect flow across chiller or water cooled condensor, or in a heating system, or in refrigeration compressors (sensing lube oil pressure differential).