Valvola di zona Resideo V4043H1106/U da 28 mm (2-port)

This is a Honeywell 2-port zone valve, 28 mm connection, from the V4043 series. Parts of this type are installed in the heating circuit to control the flow of water to a specific zone. The valve opens when the zone’s thermostat or controller sends a demand signal, and closes by spring return when the signal is removed. The 28 mm designation refers to the pipe connection size. Such valves are selected by connection size, coil voltage (typically 230 V or 24 V), and whether an end switch is required for the burner control or pump. The actuator can often be replaced separately from the valve body. When replacing a valve of this type, verify the connection size and ensure the electrical supply matches the original actuator. The valve body may require full system drain-down to swap. If the original valve had an auxiliary switch, the replacement must provide the same switch function, or the system control sequence may not operate correctly. Mechanical wear of the valve seat or actuator gear can cause leakage or failure to open fully, so confirm the valve spindle moves freely before installation. This article is supplied with the manufacturer code V4043H1106/U and catalogue article 534.322.355. The brand is Honeywell.