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Baxi 3 Way Valve Diaphragm 248065

Baxi

Baxi 3 Way Valve Diaphragm 248065

Small diaphragm for the 3 way valve on Baxi Combi and Potterton Performa combi boilers, part number 248065.

At a glance

  • Also known as N0764
Manufacturer part no.
248065
GC number
343-565
Showing prices

£14.40

£12.00 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 Baxi 248065 is a small diaphragm for a 3 way valve, used in Baxi Combi and Potterton Performa combi boilers. It sits inside the valve assembly as the smaller diaphragm variant, where it responds to pressure changes to move the valve between hot water and heating operation.

Signs this part needs replacing

  • Hot water runs cold or only warms while the heating is running
  • Radiators heat up when only a hot water tap is opened
  • The boiler does not switch cleanly between heating and hot water modes
  • Hot water flow at the tap is weak or inconsistent
  • The 3 way valve sticks, chatters or fails to move through its full travel

Before you order

  • Check your boiler model and GC number against the fit list above
  • Compare the existing part against part number 248065 before ordering
  • Confirm the valve on your appliance takes the small diaphragm variant
  • Isolate the appliance and depressurise the system before starting work

Not sure which part?

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