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Baxi 2-Way Control Valve 7875811

Baxi

Baxi 2-Way Control Valve 7875811

Baxi 2-way control valve, part number 7875811, for use with Baxi Aquaheat appliance models.

At a glance

  • Appliance family: Aquaheat
  • Also known as 1129444
Manufacturer part no.
7875811
Showing prices

£232.40

£193.67 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Baxi 7875811 is a 2-way control valve used in Baxi Aquaheat appliances. It regulates the flow of water through the appliance circuit as part of the unit's control and distribution system. It is supplied as a single component for replacement on the listed models.

Signs this part needs replacing

  • The valve no longer diverts or controls flow, so the appliance fails to respond to demand.
  • Water passes through the valve when it should be closed, or is restricted when it should be open.
  • The valve body or spindle shows signs of leakage or scale build-up.
  • The valve is seized or stiff to operate, or the actuator no longer moves it through its full travel.
  • Inconsistent heating or hot water performance traced to the valve during fault finding.

Before you order

  • Confirm your appliance model against the fit list above before ordering.
  • Check the part number on the existing valve matches 7875811.
  • Inspect the valve connections and port arrangement on your appliance to confirm the correct fitment.
  • If in doubt, have a qualified heating engineer verify the fault and the required part.

Not sure which part?

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