McDonnell & Miller FS7-4SW Snap Switch Freon ensuring the refrigerant circuit remains

ensuring the refrigerant circuit remains free of contaminants

reducing service calls related to ignition failure

Precision Components: Includes high-grade brass burner orifices and a pressure regulator spring to maintain optimal fuel-to-air ratios

once it reaches its limit

Compact Safety: Integrated manual valve (gas cock)

McDonnell & Miller FS7-4SW Snap Switch Freon ensuring the refrigerant circuit remainsThe McDonnell & Miller FS7 4SW is a heavy duty, industrial liquid flow switch engineered for high pressure applications requiring precise flow monitoring. Featuring a 1 1 4" NPT connection and a 316 stainless steel body, this unit is rated for line pressures up to 1000 PSI (70 kg cm). The integrated single pole double throw (SPDT) snap switch provides reliable signaling for starting or stopping motors, burners, or alarms based on flow velocity. For