Lochinvar & A.O. Smith 100173799 Door Kit 319847-401 Directly compatible with 4" type

Directly compatible with 4" type E main valves used in high-demand steam heating systems

Built on the rugged TeSys SK platform

Featuring a 1-inch NPT connection and a robust 8

reducing nuisance service calls while maintaining rigorous Carrier furnace safety standards

Lochinvar & A.O. Smith 100173799 Door Kit 319847-401 Directly compatible with 4" typeThe Lochinvar & A. O. Smith 100173799 Door Kit is a field critical heat exchanger access door kit designed for high efficiency hydronic boilers and volume water heaters. This OEM assembly, which is functionally identical to WTR3086, serves as the primary seal for the combustion chamber, ensuring proper pressure vessel integrity and thermal containment. When performing a Lochinvar heat exchanger cleaning, replacing the door kit is essential to restore