Resideo VCZAL3400 Valve 30067439-890 it provides a high-limit shutdown

it provides a high-limit shutdown of the HVAC equipment and typically requires a manual reset at the unit or the remote test station to resume normal operation

10 VDC feedback for real-time position indication and secondary operation control

it ensures your system maintains proper lubrication flows without the drift seen in aftermarket alternatives

Whether you are performing a seasonal tune-up or converting gas types

Resideo VCZAL3400 Valve 30067439-890 it provides a high-limit shutdownThe Resideo VCZAL3400 Valve is a professional grade 3 4 inch NPT 2 way cartridge cage valve designed for precision in modern hydronic systems. Engineered for high performance zone control, this bronze body valve handles both chilled and hot water applications, including high concentration glycol solutions up to 60%. With a 3. 9 Cv rating and an equal percentage flow characteristic, it ensures linear control when paired with proportional non fail safe