Field Interchangeability: This unit is functionally identical to the Johnson Controls V47AR-3C

the 3/4" NPT threaded connection and 4-3/4" copper float ensure long-term reliability in commercial and industrial steam boiler applications where accurate water inventory is critical for pump protection and system stability

Designed as a rugged OEM replacement part for York and Johnson Controls equipment

troubleshooting unit heaters often requires verifying that the associated thermocouple and 22-inch pilot tubing are clear of debris

Ensures accurate water level control by maintaining proper alignment of the upper equalizing line

McDonnell & Miller FS7-4SW Snap Switch Els PW 17895 Field Interchangeability: This unit 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