Buderus Gas Valve 7736700635

The Buderus 7736700635 is a gas valve used in Buderus 500 and 600 series gas boilers. It regulates the supply of gas to the burner under the control of the boiler's electronic management, so that modulation and safe ignition are maintained across the firing range. The valve is supplied as a complete assembly, identified by the manufacturer's part number 7736700635.

• The boiler fails to light, or lights and then drops out shortly after ignition.
• Gas pressure at the burner cannot be set or held at the values given in the manufacturer's commissioning data.
• The valve does not respond to modulation signals, giving a fixed or erratic flame.
• There are signs of gas leakage around the valve body or its connections.
• The boiler locks out repeatedly with a fault code relating to flame detection or gas supply.

• Confirm the boiler model against the fitment list above, as the valve is specific to the 500 and 600 series.
• Check the existing valve's part number and its physical configuration before ordering.
• Verify that gas supply, ignition and flame detection components have been tested, so that the valve is correctly identified as the fault.
• Work on gas-carrying components must be carried out by a competent Gas Safe registered engineer, with the appliance re-commissioned and tested after fitting.