The McDonnell & Miller #FS251 flow switch NEMA 1
General-Purpose, Liquid Flow Switches, the Series FS250 – FS251 (NEMA1 version), and FS254 (NEMA4 version). These flow switches incorporate key changes to address customer expressed needs of greater reliability and lower flow sensing capabilities in a general purpose flow switch.
Features and Benefits
- Universal design serves the widest variety of applications
- For starting or stopping electrically operated equipment such as signal lights, alarms, motors, automatic burners, metering devices and others.
- Replacement for common flow switches from Johnson/Penn, Potter/Taco, Watts, Hydrolevel and other manufacturers.
- 1″ NPT Connection
- Two electrical knock-outs allows connection from either end
- Sensitivity adjusting screw makes flow adjustment easy
- Single pole, double throw snap switch
- EPDM O-ring sealed
- Four stainless steel paddles included -1″, 2″, 3″ & 6″ (25, 50, 80, & 150mm)
- Minimum temperature (fluid or ambient) 32°F (0°C)
- Maximum temperature 227°F (107°C)
- Maximum pressure 160 psi (11.3 kg/cm2)
- FS251 – NEMA 1 enclosure
- FS254 – NEMA 4 enclosure