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This 2-stage replacement valve is compatible with most modern furnace ignition sequences
Rugged Construction: Built to withstand high-velocity outdoor environments in standard Lennox and Ducane condensing units
Reduced Friction: Integrated Teflon sleeve minimizes torque requirements on the power head
offering a direct OEM replacement path for numerous legacy units
McDonnell & Miller FS7-4SW Snap Switch Els PW 29614 This 2-stage replacement valve isThe 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
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