Honeywell Gas valve VR4601CB1081U

The Honeywell VR4601CB1081U is a gas valve designed for safe regulation of gas flow in domestic heating systems, boilers, and water heaters. It features a flanged connection, a maximum inlet pressure of 60 mbar, and a flow capacity of 4.2 m³/h at a pressure drop of 3 mbar. The valve includes an internal fine-mesh filter, a top-connected coil, and a regulator spring that can be locked. It is certified to CE standards and is an OEM equivalent for part number 7822390, fitting VIESSMANN Vitogas 050 GSO and GSOA boilers.

Parts of this type are selected by matching the connection thread, inlet pressure, flow capacity, and coil connection to the existing system. The valve must be compatible with the boiler's gas type and pressure requirements. Installation involves ensuring the flanged connection aligns properly and the coil is connected at the top. The regulator spring can be locked if pressure regulation is not needed.

When gas valves of this kind fail, symptoms may include inconsistent gas flow, inability to maintain outlet pressure, or complete loss of gas supply to the burner. The equipment may fail to ignite, produce weak flames, or shut down unexpectedly. Check for blockages in the internal filter, verify the coil connection, and test the valve's response to power and gas pressure changes.