This general service valve is a staple in HVACR systems

Common Questions How do I wire the A19CAC-1 for heating and cooling

These part numbers are identical and refer to the same 1-1/4 inch 30 PSI pressure relief valve

Engineering specifications include a shaded-pole motor design with a 1/4-inch shaft and Clockwise Lead End (CWLE) rotation

Shielded Protection: Overall foil shield with drain wire eliminates crosstalk and external signal noise

Lochinvar & A.O. Smith 100093983 Pilot/Thermopile 319848-301 This general service valve isThe Lochinvar and A. O. Smith 100093983 Pilot Thermopile Assembly is a mission critical ignition component engineered for high efficiency LP gas water heaters and commercial boilers. This complete assembly is the direct OEM replacement for legacy part numbers 321165 001 and 100078038, ensuring a precise fit and reliable millivolt output within the combustion chamber. Designed for liquid propane applications, this kit includes the thermopile generator,