Mcdonnell & Miller FS254

Mcdonnell & Miller

General Purpose Flow Switch, NEMA4

FS254 553680
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General Purpose Flow Switch, NEMA4


ItemGeneral Purpose Switch
Min. Flow Rate (GPM)5.8
Max. Flow GPM131
Connection Size (In.)1 MNPT
Switch EnclosureNEMA 4
Min. Ambient Temp. (F)32
Min. Fluid Temp. (F)30
Max. Fluid Temp. (F)250
Max. Pressure (PSI)160
Operating Velocity Range (FPM)130 to 280
Switch TypeSingle Pole Double Throw Snap Switch
Contact Rating7.4A @ 120 VAC - Full Load, 120 VA @ 120 or 240 VAC - Pilot Duty
Body MaterialBrass
Material of ConstructionBrass, SS, EPDM
Wetted MaterialsBrass, Stainless Steel, EPDM
Max. Operating Velocity (FPM)600
For Use With Water Systems
Application Signal Lights, Alarms, Motors, Automatic Burners and Metering Devices
Weight 4.000000


General Purpose Switch, Min. Flow Rate 5.8 GPM, Max. Flow GPM 131, Connection Size (In.) 1 NPT, Switch Enclosure NEMA4, Min. Ambient Temp. 32 F, Min. Fluid Temp. 30 F, Max. Fluid Temp. 250 F, Max. Pressure 160 PSI, Operating Velocity Range 130 - 280 FPM, Switch Type Single Pole Double Throw Snap Switch, Contact Rating 7.4A @ 120 VAC - Full Load, 120 VA @ 120 or 240 VAC - Pilot Duty, Body Material Brass, Material of Construction Brass, Stainless Steel, EPDM, Voltage 120/240

Air and Liquid Flow Switches
  • Additional flow range information is available on , or call your local branch.
  • Single-pole, double-throw snap switch Sensitivity flow adjustment screw 120/240VAC operation Full load amps: 7.4 at 115V, 3.7 at 230V
  • Liquid Flow General-Purpose
  • Start or stop electrically operated equipment such as signal lights, alarms, motors, automatic burners, and metering devices. 2RUL3 and 2RUL4 have 4 stainless steel paddles that fit 1", 2", 3", and 6" pipe; paddle can be trimmed to fit incremental pipe sizes.

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