Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Baxi Gas Valve Inc O-Rings & Gasket BAXI402550

Baxi

Baxi Gas Valve Inc O-Rings & Gasket BAXI402550

Baxi gas valve, part 402550, supplied with O-rings and gasket, controlling gas flow to the burner in Baxi appliances.

At a glance

  • Part type: Gas valve
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
BAXI402550
Showing prices

£360.00

£300.00 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
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 Baxi 402550 is a gas valve assembly supplied complete with its O-rings and gasket. It controls the flow of gas to the burner, allowing the appliance to light and modulate to match demand. It is a Baxi-manufactured spare listed under gas valves.

Signs this part needs replacing

  • The burner fails to light, or lights only intermittently
  • The appliance locks out shortly after a heat or hot water demand
  • The flame drops out during operation
  • No gas reaches the burner despite a call for heat
  • Debris, damage or staining is visible around the valve body

Before you order

  • Check the appliance data plate and GC number against the part number to confirm the correct valve.
  • Inspect the supplied O-rings and gasket before fitting and renew them if they are hardened or marked.
  • This part is fitted to a gas appliance; installation must be carried out 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.