Lochinvar & A.O. Smith 100111317 Pressure Switch 319848-301 Standardized HVAC Voltage: Specifically designed

Standardized HVAC Voltage: Specifically designed for 24Vac circuits

Look for a blown top membrane

Mechanical Reliability: Built to resist pilot tube clogging and slide-valve sticking

the included packing cartridge and repack kit are specifically designed to reseal the valve stem and stop external fluid loss

indicates the seal has failed

Lochinvar & A.O. Smith 100111317 Pressure Switch 319848-301 Standardized HVAC Voltage: Specifically designedThe Lochinvar & A. O. Smith 100111317 Pressure Switch is a critical OEM safety component engineered for precise airflow verification in high efficiency water heaters and boilers. This normally open air pressure switch is calibrated to a fixed set point of 0. 20" WC (Water Column), ensuring the combustion blower is generating sufficient negative pressure before the ignition sequence initiates. As a genuine 100111317 replacement part, it provides the