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Vaillant Gas Control Valve 0020143512

Vaillant

Vaillant Gas Control Valve 0020143512

Gas control valve for Vaillant ecoTEC VU GB 1006/5-5 and 1206/5-5 boilers, part number 0020143512.

At a glance

  • Appliance family: ecoTEC VU GB 1006/5-5 and 1206/5-5
  • Also known as 1385962
  • Gas-carrying parts must be fitted and commissioned by a Gas Safe registered engineer
Manufacturer part no.
0020143512
Showing prices

£787.02

£655.85 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Vaillant 0020143512 is a gas control valve used on ecoTEC VU GB series gas boilers. It regulates the flow of gas to the burner, opening and modulating supply in response to the boiler's demand signal. It is a gas-carrying component and must be fitted by a competent, Gas Safe registered engineer.

Signs this part needs replacing

  • The boiler fails to light, or lights and then extinguishes shortly afterwards
  • Repeated ignition lockouts with the burner never establishing a stable flame
  • No gas reaching the burner despite a confirmed demand from the controls
  • Audible clicking from the valve without any corresponding ignition
  • Gas smell around the valve body or its connections

Before you order

  • Confirm your appliance model and GC number against the data badge before ordering
  • Check the part number stamped or labelled on the existing valve matches 0020143512
  • Establish whether your appliance is the R2 or R3 variant, as listed in the fitment data
  • Gas-carrying parts must be fitted and commissioned by a Gas Safe registered engineer

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.