Series FS250 has a measured flow-rate sensing capability of 5.8 gal/min in 1" pipe (horizontal pipe installations). The liquid flow switches have a male 1" NPT brass pipe connection; 1, 2, 3 and 6" stainless steel paddles; and ASME Section IV boiler ratings of 250°F (121°C) and 160 psig. Switching mechanisms include flow detection via stainless steel paddles inserted into flow stream piping. Other features include cam actuation of the electrical switch and easily accessible electrical connections and flow-sensing adjustment screws.
McDonnell & Miller, (847) 966-3700

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