This boiler replacement part ensures your hydronic system continues to operate within the manufacturer’s specified safety parameters

For external signal-start capabilities

Featuring a 5/8-inch ODF inlet and a 1 3/8-inch ODF outlet connection

This valve utilizes high-performance Teflon stem packing and an EPDM glass seal to maintain a leak-free interface under thermal cycling

Resideo VCZAM1100 Valve 322838-754 This boiler replacement part ensuresThe Resideo VCZAM1100 Valve is a professional grade 3 4 inch sweat zone valve designed for demanding hydronic applications, including fan coil units, baseboard radiators, and convectors. Engineered with a bronze body and a stainless steel stem, this 2 way cartridge cage valve provides a high 4. 6 Cv capacity and a linear flow characteristic for precise temperature control. It is rated for 60 psi close off pressure, ensuring reliable performance in