Description
Mechanical Leverage: The 12-inch length provides the buoyancy-to-pressure ratio required for high-capacity float valve level control
all of which prevent the differential pressure from closing the circuit
Can the superheat be adjusted in the field
High Close-off Pressure: Designed to maintain 100% bubble-tight shut-off
McDonnell & Miller FS254 Snap Switch R-410A Mechanical Leverage: The 12-inch lengthThe McDonnell & Miller FS254 Snap Switch (Part Number 120610) is a heavy duty, general purpose liquid flow switch engineered for high reliability monitoring in HVACR and industrial hydronic systems. This unit is the direct replacement for the legacy FS 254 and offers a field proven solution for starting or stopping electrically operated equipment including automatic burners, circulator pumps, and system alarms. Built with a NEMA 4 enclosure, the FS254