Siemens Combustion 7MF-421-300 Pressure Sensor 323080-701 the bypass line to the

the bypass line to the receiver will remain hot even in high ambient temperatures

Replacing an aging or cracked S1-028-15539-000 is a standard part of York furnace maintenance to prevent nuisance pressure switch trips and heat exchanger corrosion

This model is a direct replacement for 740-1 1/4-40 units and includes a manual test lever for verifying seat clearance

Integrated LED Indicator: Provides instant visual verification of power status directly at the right-angle connection point

Direct OEM Fit: Ensures exact positioning within the burner assembly for Reznor heater troubleshooting

Siemens Combustion 7MF-421-300 Pressure Sensor 323080-701 the bypass line to theThe Siemens SITRANS P DS III 7MF421300 is an industry standard differential pressure transmitter designed for high precision monitoring of liquids, gases, and vapors in demanding combustion environments. Engineered with a piezoresistive silicon sensor, this unit delivers a linear 4 20mA output signal proportional to the input pressure, ensuring seamless integration with Siemens burner management systems and PLC architectures. This specific model