York S1-024-39490-000 Pressure Switch the Watts 0881399 Air Gap

the Watts 0881399 Air Gap is specifically designed for the 909 Series

Standard 1/4" barbed port for fast pneumatic line connection

This specific model utilizes a solid base for a secure

preventing the setpoint drift often encountered with low-grade aftermarket alternatives

What causes a steam vent to hiss or leak water

York S1-024-39490-000 Pressure Switch the Watts 0881399 Air GapThe S1 024 39490 000 is a factory caliber York pressure switch engineered to monitor vital air pressure differentials within the combustion blower assembly. This 0. 26 WC pressure switch acts as a primary safety limit, confirming that the inducer motor is exhausting flue gases effectively before allowing the gas valve to energize. Built as a furnace pressure switch replacement, this component is the direct functional successor to the 024 27557 000,