For residential and light commercial air handling applications

it utilizes an internal fan to dissipate heat

providing a direct-drop replacement that restores original CFM specifications to the terminal equipment

This Weil McLain 383-500-035 Blower Assembly Kit is the direct OEM replacement engineered specifically for Ultra-155 Series Gas Boilers

Smith 100208806

Conbraco 18C-542-4-125 Valve 340155-7024 For residential and light commercialThe Conbraco 18C 542 4 125 is a high capacity temperature and pressure relief valve engineered for heavy duty protection of commercial hot water storage tanks and large scale boilers. This ASME Section IV certified valve features a rugged bronze body and stainless steel springs, ensuring long term seat integrity in demanding hydronic environments. With a 1 1 2" Male NPT inlet and 1 1 2" Female NPT outlet, it provides a substantial 5,125,000 BTU hr