Series FS4-3

General Purpose Liquid Flow Switch
• 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
• Two electrical knock-outs allows connection from either end.
• Sensitivity adjusting screw makes flow adjustment easy
• Single pole, double throw snap switch
• Hardened stainless steel bearings minimize friction
• Sealed Monel bellows
• Four stainless steel paddles included: 1", 2", 3" & 6" (25mm, 50mm, 80m & 150mm)
• Optional Features:
  Time Delay (5 or 20 Seconds)
  Two SPDT switches to make or break two seperate circuits
  Reinforced paddles
  Materials of construction suitable for corrosive liquids
  Fire sprinkler service - Model FS4-3F only
  BSPT threads
• Minimum Temp (fluid or ambient) 32ºF (0°C)
• Maximum Temp 300°F (149°C)
• Maximum Pressure 160 psi (11.3 kg/cm²)

Do Not Use Liquid Flow Switches on Systems With Flow Greater Than 10feet (3m) Per Second

Electrical Ratings: