McDonnell & Miller Series FS7-4 Industrial Liquid Flow Switches FS7-4D W/SPDT Switches

Universal design serves the widest variety of large pipe applications, including heating and hydronic systems, air conditioning, refrigeration and process work. 1-1/4″ NPT. Brass with sealed tube construction. Single pole, double throw snap switch. Magnetic switching mechanism eliminates need for bellows. 1-1/4″ & 1-1/2″ (32 & 40mm) Tees 2 L . Sensitivity adjusting screw makes flow adjustment easy. Paddles can be trimmed to suit application needs. Optional features – Extended paddle arm – Model FS7-4L – Two SPDT switches to make or break two separate circuits – Stainless steel body and paddles – BSPT threads. Minimum temperature (fluid or ambient) 32°F (0°C). Maximum temperature 300°F (149°C). Maximum operating pressure 300 psi (21 kg/cm2)1000 psi (70 kg/cm2) – Stainless Steel models. Made in the USA.