Lochinvar MSC3701 Boiler Burner Sight Glass KitLochinvar MSC3701 Boiler Burner Sight Glass Kit is an essential replacement part for accurate burner inspection and safe boiler operation. Designed for PB PF 250 to 1000 Power Fin models, this sight glass kit helps you monitor flame status and maintain optimal performance in your heating and hot water supply boiler. Built to the original Lochinvar specifications, it delivers reliable visibility and durable construction for ongoing maintenance. Fits PB

Upgrade your control system with the Armstrong 47K20 for reliable voltage conversion

protecting both the heat exchanger and electrical circuits

this pressure switch delivers precise sensing at a rating of 0

Application: industrial and commercial pilot burner

Gas Valve VAL09029 from Trane provides precise

and fluid-handling systems

making it ideal for industrial HVAC and process applications

Easy installation and quick commissioning to minimize project timelines

maximizing efficiency and reducing downtime

this SPD helps safeguard motors

Includes burner assembly and necessary mounting hardware

Easy installation with standard wiring