Lochinvar & A.O. Smith 100208388 Pressure Switch 320788-703 As an ASME Section IV

As an ASME Section IV certified safety component

this 120V/24VAC relay serves as a reliable solution for restoring pilot circuit integrity and water heater operational stability in demanding environments

the thermocouple likely failed to produce the required millivolt signal to the gas valve

Reliable Operation: Synchronous motor providing constant travel speed regardless of load

For contractors requiring high-accuracy modulation

Lochinvar & A.O. Smith 100208388 Pressure Switch 320788-703 As an ASME Section IVThe Lochinvar & A. O. Smith 100208388 Pressure Switch is a critical 1" WC (Water Column) safety component designed for high efficiency boiler and water heater systems. As an authentic OEM replacement part, it ensures the inducer motor is pulling the correct draft before the ignition sequence begins. Rated at 1. 0" WC, this single pole, double throw (SPDT) switch is engineered to monitor combustion air pressure and prevent operation under unsafe