this 18” damper is essential for protecting constant volume systems from bypass-related performance drops

this 397H series gasket set maintains the pressure integrity necessary for original equipment performance and safety compliance

Enhanced System Safety: Accurately monitors negative pressure to prevent hazardous operation during venting failures or inducer blockages

controlled by the captive trippers on the 7-day dial

Can I use an AC transformer to power this motor

Lochinvar & A.O. Smith 100109680 Pilot 319825-402 this 18” damper is essentialThe Lochinvar & A. O. Smith 100109680 Pilot Assembly is a critical OEM replacement part engineered for precise ignition control in high efficiency residential and commercial gas water heaters and boilers. As a veteran grade pilot burner assembly, this component ensures consistent flame rectification and system reliability, preventing the nuisance lockouts often caused by carbon buildup or worn thermocouples. This kit features a robust thermopile and