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Secure Porting: Standard 1/4" NPT threading facilitates leak-free installation with common hardware
22 and MSS SP104 standards
as it utilizes standard furnace pressure switch mounting configurations and maintains original factory electrical specifications
always verify your system’s maximum working pressure requirements before installation
the S1-025-17620-013 offers a direct-fit solution that maintains the original engineering specifications of the B1CH048A25A and similar models
Reznor 221251 Pressure Switch Els PW 17895 Secure Porting: Standard 1/4" NPTThe Reznor 221251 is a critical OEM replacement pressure switch designed for precision airflow monitoring in Reznor HVAC equipment. Calibrated to a 2. 65" wc pressure rating, this component ensures the inducer motor is generating the correct static pressure before allowing the ignition sequence to proceed. As a veteran grade HVAC safety switch, it serves as the primary safeguard against inadequate venting or combustion air blockages. Built with a