Durable Construction: Metal case and premium internal components provide reliable operation in demanding HVAC environments

is a specialized pilot safety component designed for gas-fired heating systems utilizing a Right Hand Thread configuration

Converting gas types requires specific orifice and valve adjustments per manufacturer guidelines

the S350AB series would be the appropriate selection

Lochinvar & A.O. Smith 100287085 Door 328140-751 Durable Construction: Metal case andFor veteran contractors maintaining high efficiency hydronic systems, the Lochinvar & A. O. Smith 100287085 Burner Plate Insulation Door is a critical OEM replacement part designed for precise thermal management. This 304mm diameter burner door insulation (replaces legacy part 100145383) is engineered to withstand extreme combustion chamber temperatures while preventing energy robbing heat loss. Specifically compatible with the Lochinvar Knight