including Norton 201N and Robertshaw 41-402N

This normally closed solenoid valve is uni-directional

and flame rectification check to ensure the burner remains lit safely

What are the dimensions for wall coverage

The compact footprint and narrow differential make it an ideal choice for localized sensing where space is at a premium and high-accuracy thermal feedback is required

Lochinvar & A.O. Smith 100173749 Door 319852-301 including Norton 201N and RobertshawThe Lochinvar & A. O. Smith 100173749 Heat Exchanger Access Door is a critical combustion chamber component engineered for Lochinvar Knight WB and SNA SLA series boilers. As a veteran grade OEM replacement part, this access door (WB model) ensures a high pressure seal for the heat exchanger assembly, facilitating essential annual maintenance and internal fire tube cleaning. Built with heavy duty materials to withstand high thermal stress, it maintains