McDonnell & Miller FS254 Snap Switch Els PW 29614 Water Hammer Resilience: The inverted

Water Hammer Resilience: The inverted bucket mechanism is naturally buoyant and handles sudden pressure surges better than float-type or thermostatic alternatives

Maintenance-Friendly Design: Features field-serviceable parts and a universal coil family that fits across all 200RB series bodies

essential for gravity-fed or low-pressure loops

Can the superheat be adjusted on this model

Common Questions: When should a furnace limit switch be replaced

McDonnell & Miller FS254 Snap Switch Els PW 29614 Water Hammer Resilience: The invertedThe 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