The McDonnell & Miller FS8-W Flow Switch is rated with a NEMA 4X switch enclosure. It is watertight, dust tight and corrosion resistant. It is well suited for out door installations. The FS8-W has wetted parts of brass, solder and monel and can be adjusted for sensitivity to flow. Individual paddles are adaptable for pipes 1 to 3 inches, extended paddle for pipe to 6” is also included. Installs in tee or welding neck in horizontal pipe; 1 inch threaded connection.

      The McDonnell & Miller FS4-3 Flow Switch offers an economical and positive way to start or stop almost anything electrically operated. It serves a wide variety of applications in air condition, heating, water systems, and in processing work-wherever it is important to know when flow or no-flow occurs.