the HD44AR134 is the manufacturer-designated updated replacement for the HD44AE131

reducing mechanical wear on the compressor and other downstream components

this valve can be used with LP/Propane

Does this part include the water feed tube

5-inch square mounting pattern and standard stub-tube sweat connections for efficient installation

Lochinvar & A.O. Smith 100109816 Pressure Switch Els PW 29614 the HD44AR134 is the manufacturer-designatedThe Lochinvar & A. O. Smith 100109816 Pressure Switch is a critical OEM replacement part engineered for precise atmospheric monitoring in high efficiency commercial water heaters and boilers. Calibrated to a 6. 5" WC (Water Column) set point, this differential pressure switch acts as a safety critical flue prover, ensuring the combustion blower is generating sufficient negative pressure to safely vent exhaust gases. Designed for compatibility with