Liquid Flow

General Purpose Liquid Flow Switch, Series FS250

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)
  • Models
    • FS251 – NEMA 1 enclosure
    • FS254 – NEMA 4 enclosure