McDonnell & Miller Series FS1 High Sensitivity Liquid Flow Switches, 1/2" NPT

For general purpose applications where high sensitivity is required and moderate or low flow rates are encountered such as air conditioning, heating and hydronic systems, water, fuel oil, some viscous liquids and oils in process work. In-line configuration eliminates need for a pipe tee. High flow capacity. 1/2" NPT. Single pole, double throw snap switch. Switch compartment is completely sealed to protect it from the liquid. Sensitivity adjusting screw makes flow adjustment easy. Optional features - BSPT threads - Gold plated contacts. Minimum temperature (fluid or ambient) 32°F (0°C). Maximum temperature 225°F (107°C). Maximum operating pressure 100 psi (7 kg/cm2). Made in the USA.