114400 Model FS4-3 McDonnell & Miller Liquid Flow Switch

Installation Guide

McDonnell & Miller FS4-3 Liquid Flow Switch General Purpose. Universal Design.

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
• 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″ (25, 50, 80, & 150mm)

Optional Features

• Two SPDT switches to make or break two separate circuits
• Materials of construction suitable for corrosive liquids
• BSPT threads
• Minimum temperature (fluid or ambient) 32°F (0°C)
• Maximum temperature 300°F (149°C)
• Maximum pressure 160 psi (11.3 kg/cm2)