Worcester Bosch Gas Valve 28i Dungs 87161567660

The Worcester Bosch gas valve 87161567660 is a Dungs-manufactured valve assembly used on the 28i RSF range of gas-fired boilers. It sits on the gas train and regulates the flow of gas to the burner, opening, closing and modulating the supply in step with the appliance's demand for heat. Because it controls the burner input directly, it is a safety-critical component and is replaced as a complete assembly rather than repaired on site.

• The boiler fails to light, or lights and then locks out shortly afterwards.
• The flame drops out during a demand for heat, with repeated ignition attempts.
• Burner output is unstable, with poor modulation or an uneven flame pattern.
• Whistling, buzzing or other abnormal noise coming from the gas valve body.
• A smell of gas around the valve or its connections.

• Check the GC number and data plate on the appliance to confirm the model before ordering.
• Cross-reference the numbers on the valve being removed against the alternative part numbers listed below.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.