If the manifold pressure deviates significantly from 3

For extreme exposure

reducing bench time and post-service callbacks

technicians can ensure an exact drop-in fit

ensuring a perfect match for 1-1/2" to 2" 900 Series valves

Lochinvar & A.O. Smith 100163214 Gasket R-410A If the manifold pressure deviatesThe Lochinvar & A. O. Smith 100163214 Gasket is a critical OEM replacement part designed for sealing the sight glass assembly in high efficiency commercial boilers and water heaters. This sight glass gasket kit ensures a gastight, high temperature seal, allowing technicians to safely monitor burner flame characteristics and combustion stability without risking flue gas leakage or vacuum loss. Manufactured to rigorous standards, this kit is