McDonnell & Miller FS251 General Purpose Liquid Flow SwitchMcDonnell & Miller FS251 General Purpose Liquid Flow Switch is a paddle type flow switch designed for reliable liquid monitoring in industrial applications. This 1 inch nominal size unit features threaded end connections, a SPDT snap switch, and a rugged NEMA 1 enclosure, making it suitable for a wide range of liquids and installation environments. Engineered for precise response, the FS251 supports a wide flow bandfrom 5. 8 to 17. 6 GPM when flowing

This thermostatic radiator valve (TRV) combines reliability with versatile installation options

Ideal for building automation

safe temperatures

Limit switch: Microswitch (NC)

the NRF-22 is ready for quick installation and long-term service in your heating system

and the valve supports a wide range of heating circuits with a low flow coefficient for steady performance

Compatibility: Used On 150S Series Low Water Cut-Off/Pump Controller

Temperature Range: -40°F to 205°F

it fits a range of M1 series units

Temperature range: 40–150 Deg F (sensing)

it’s the essential seal you need to maintain pump performance and longevity

25 mA coil current