McDonnell & Miller 120611 Liquid Flow Switch model FS251 with NEMA 1 enclosure, 1" NPTM pipe connection, and four stainless steel paddle options (1", 2", 3", and 6"). This general purpose liquid flow switch may be used for starting or stopping electrically operated equipment, such as signal lights, alarms, motors, automatic burners, metering devices and others. Its universal design serves the widest variety of applications and may be used to replace common flow switches from other manufacturers.

Features:

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

Specifications:

Manufacturer: McDonnell & Miller
Manufacturer Part Number: 120611
Model: FS251
Application: Liquid Flow
Enclosure: NEMA 1
Voltage: 120V, 240V
Connection Size: 1"
Control Connection: NPT
Max Pressure: 160 psi
Max Temp: 250°F
Max Velocity: 10 ft/sec
Min Temp: 32°F
Alias: FS4-3
Weight: 2.53