Alpha Gas Valve Kit 3.025191

The Alpha 3.025191 is a gas valve kit for Alpha's Eco 2 and InTEC 2 family of domestic gas boilers. It sits in the gas train and regulates the volume of gas delivered to the burner, setting the rate at ignition and holding it steady through modulation as demand changes. The valve is a serviceable component, so it is replaced as a unit when the internal seat, diaphragm or solenoid no longer holds a stable gas rate.

• The boiler fails to fire on a call for heat, or repeatedly locks out during the ignition sequence.
• The flame lights and then drops out within seconds, with the boiler returning to a lockout state.
• A fault code relating to the gas valve or flame supervision appears intermittently.
• The flame is unstable or modulation is erratic, with the boiler unable to hold a steady gas rate.
• Gas pressure at the burner is absent or inconsistent when checked during a demand.

• Check the GC number on the appliance data badge against the list above to confirm the correct variant.
• The alternative number 1258701 may appear on older paperwork or labels for the same component.
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.