McDonnell & Miller FS4-3 Switch Refrigerant With its power-limited circuit designation

With its power-limited circuit designation per NEC Article 725

Using the Belimo ZG-LMSA Shaft Extension ensures your installation remains square and true

reducing hysteresis in the control loop

By maintaining a steady sweep of dry nitrogen

you know that dielectric union repair is critical for preventing galvanic corrosion between dissimilar metal pipes

McDonnell & Miller FS4-3 Switch Refrigerant With its power-limited circuit designationFor contractors requiring reliable system protection, the McDonnell & Miller FS4 3 (Part Number 114400) is a heavy duty general purpose liquid flow switch designed to monitor flow in heating, cooling, and water process lines. This 1" NPT unit features a single pole, double throw (SPDT) configuration, allowing you to easily integrate signal lights, alarms, motors, or burners into the control circuit. Engineered to operate at a max pressure of 160 PSI