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McDonnell Miller Series FS4-3 General Purpose Liquid Flow Paddle Switches

McDonnell Miller
General Purpose Liquid Flow Paddle Switches
Series FS4-3

• 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

Select a link under the "item" tab below to order.

ItemPart NumberDescriptionWeight Ibs.(kg)
FS4- 3114400General purpose flow switch1.9 ( 0.9)
FS4- 3J114610FS4-3 connections1.9 ( 0.9)
FS4- 3- RPT114639FS4-3 w/test button1.9 ( 0.9)
FS4- 3Z114410FS4-3 w/ANSI terminal connections1.9 ( 0.86)
FS4- 3A114450FS4-3 w/tamper-proof cover screws2.0 ( 0.9)
FS4- 3D114550FS4-3 w/2 SPDT switches2.3 ( 1.0)
FS4- 3S114641FS4-3 w/SS body, monel bellows1.9 ( 0.9)
FS4- 3SJ176216FS4-3S connections1.9 ( 0.9)
FS4- 3DS114642FS4-3S w/2 SPDT switches3.3 ( 1.5)
FS4- 3- 5R114405FS4-3 w/5 second DOB2.3 ( 1.0)
FS4- 3- 20114425FS4-3 w/20 second DOM2.3 ( 1.0)
FS4- 3J- E114611FS4-3J-CE conformance rated1.9 ( 0.9)
FS4- 3D- E114552FS4-3D-CE conformance rated1.9 ( 0.9)
FS4- 3S- E114646FS4-3S-CE conformance rated1.9 ( 0.9)
FS4- 3F114625FS4-3 for fire sprinkler service1.9 ( 0.9)
FS4- 3FCAN114626FS4-3 for fire sprinkler service (Canada)2.3 ( 1.0)
FS4- 3F- 20114635FS4-3F w/20 second DOM2.3 ( 1.0)
FS4- 3DF114555FS4-3F w/2 SPDT switches2.3 ( 1.0)
FS4- 3DF- 20114640FS4-3F w/20 second DOM,2 SPDT switches3.3 ( 1.50)
Motor Switch Rating (Amperes)
Voltage Full Load Locked Rotor Pilot Duty
120 VAC 7.4 44.4 125 VA at 120 or 240 VAC 50 or 60 cycles
240 VAC 3.7 22.2 125 VA at 120 or 240 VAC 50 or 60 cycles