These parts are functionally identical and interchangeable

An "OL" or infinite reading indicates a broken coil wire requiring immediate replacement

What valves does this coil fit

ensuring compatibility with standard 1-1/8 inch OD copper tubing

Antunes Controls 801111321 Pressure Switch Els PW 17895 These parts are functionally identicalThe Antunes Controls 801111321 is a versatile Air Differential, Vacuum, and Pressure Switch designed for precision monitoring in commercial HVAC and industrial process applications. This SPDT air pressure switch features an adjustable set point range of . 1 to 10 inches water column, allowing for exacting field calibration. Constructed with a durable 1 8 inch NPT connection and integrated Harrison Connector, it ensures a secure, leak free interface in