The E-Main series is engineered for dead-end service

This bearing is designed for a standard 1-inch diameter blower shaft

While some universal boards exist

calibrated to open at 170°F and close at 140°F

ensuring long-term durability in high-demand hydraulic circuits

Lochinvar & A.O. Smith 100112339 Gas Valve 321894-706 The E-Main series is engineeredThe Lochinvar & A. O. Smith 100112339 Gas Valve is an OEM spec replacement engineered for high recovery commercial and residential liquid propane (LP) water heaters. As many technicians know, maintaining precise manifold pressure is non negotiable for clean combustion; this unit is factory regulated to a 10" WC output to ensure stable firing rates. It serves as the direct replacement for retired part numbers including 9007891005, 6911136, and