Honeywell Gas valve VR4605CB1009B

The Honeywell VR4605CB1009B is a gas valve with a nominal diameter of 23 mm and flanged connection threads. It has a maximum inlet pressure of 60 mbar and a flow capacity of 3.1 m³/h at a pressure drop of 3 mbar. The valve features a back pressure of 50 mbar on the first valve and a top coil connection. It is CE certified.

Gas valves of this type are selected by matching the nominal diameter, connection type (flanged or threaded), and maximum inlet pressure to the system requirements. The flow capacity at a given pressure drop must be sufficient for the burner's demand. Installation involves ensuring the valve orientation is correct, typically with actuators positioned vertically or within a 90-degree angle, and connecting the coil according to the specified top connection.

Common failures include valve sticking or leaking, which may cause burner ignition issues, unstable flame, or gas odor. If the valve fails to open or close properly, the equipment may not start or may shut down unexpectedly. Check for proper electrical connection to the coil and verify inlet pressure and flow capacity against specifications.