The Vaillant 0020143512 Gas Control Valve is a genuine replacement fuel-regulation component designed to manage the flow of gas into your boiler’s burner assembly. It precisely meters the amount of fuel delivered to the combustion chamber in response to control signals, helping maintain stable ignition, efficient combustion and accurate modulation of heat output. Integrated safety features shut off the gas supply instantly if a fault is detected, protecting internal components and reducing the risk of unsafe conditions.

This gas control valve is compatible with Vaillant boilers that reference part number 0020143512 in their technical documentation. To ensure correct fitment and reliable performance, always verify that your existing component’s part number matches before installation, as gas valve designs and connections vary between models and system configurations.

Supplied ready for direct replacement, the 0020143512 Gas Control Valve integrates with the boiler’s existing gas inlet connection, control wiring and mounting points without modification when installed by a qualified engineer. Choosing this genuine Vaillant component helps restore proper gas regulation, improves combustion control and supports safe, dependable heating performance in compatible boilers.