Rugged brass construction ensures long-term durability in high-cycle hydronic systems

455 inches

Is the chain tensioner included in the box

this means a reliable

featuring a 14

Lochinvar & A.O. Smith 100208332 Sight Glass 321042-401 Rugged brass construction ensures long-termThe Lochinvar & A. O. Smith 100208332 Sight Glass is a critical diagnostic component engineered for high recovery commercial boilers and water heaters. As a veteran technician knows, maintaining a clear line of sight into the combustion chamber is essential for verifying burner flame rectification and overall pilot stability without breaching the sealed system. This OEM replacement part is manufactured from high strength borosilicate glass, providing