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Baxi Diaphragm Pressure Differential Valve 248066

Baxi

Baxi Diaphragm Pressure Differential Valve 248066

Baxi diaphragm pressure differential valve, part 248066, for Combi and Potterton Performa boilers.

At a glance

  • Also known as DIAPHRAGM-PRESSURE-DIFF-VALVE, N2227
Manufacturer part no.
248066
GC number
343-567
Showing prices

£15.24

£12.70 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 248066 is the large diaphragm for the pressure differential valve used in Baxi Combi and Potterton Performa appliances. It sits within the pressure differential valve assembly in the diverter valve group and responds to changes in pressure to switch the boiler between domestic hot water and central heating operation.

Signs this part needs replacing

  • Domestic hot water runs hot then cools, or the boiler fails to switch correctly between hot water and heating.
  • The boiler does not respond to a hot water demand.
  • The diaphragm shows visible splits, perishing or distortion.
  • Water weeps from the pressure differential valve area.

Before you order

  • Confirm the boiler model against the fit list above.
  • Check the part number 248066 on the existing component or in the appliance manual.
  • Inspect the valve assembly for wear and confirm that the diaphragm alone is required.

Not sure which part?

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