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Many technicians prefer filing a small flat spot on the 5/16" rod surface where the set screw makes contact to provide a mechanical lock
Universal Voltage Compatibility: Operates across a wide 18-240 VAC range
Key Benefits: OEM Compatibility: Genuine Source1 part designed as a direct drop-in for York S1-025-29041-003
allowing it to handle line voltage fluctuations and inductive spikes better than a standard 370V unit
McDonnell & Miller 304400 Cover Many technicians prefer filing aThe McDonnell & Miller 304400 is a genuine replacement flow switch cover (Model FS4 3COV) engineered specifically for Xylem FS4 3 liquid flow switches and the AF 1, AF 2, and AF 3 airflow switch series. In demanding commercial boiler and process piping environments, maintaining the integrity of the switch housing is critical for protecting the single pole, double throw (SPDT) snap switch and internal sensitivity adjustments from dust, moisture, and
