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Main Diaphragm 5110963

Main

Main Diaphragm 5110963

Diaphragm for the diverter valve assembly on Main Multipoint BF and Multipoint BF ErP water heaters.

At a glance

  • Part type: diaphragm
  • Also known as 1160615
Manufacturer part no.
5110963
GC number
H12-124
Showing prices

£111.95

£93.29 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 Main 5110963 is a diaphragm used in the diverter valve assembly of Main Multipoint water heaters. It responds to changes in water flow through the unit, allowing the valve to operate the burner as hot water is drawn. It is listed as a water heater spare within the diverter valve category.

Signs this part needs replacing

  • No hot water produced when a tap is opened, with the burner failing to fire
  • The diaphragm is split, stretched or perished when inspected
  • Reduced or inconsistent hot water flow that changes with water pressure
  • Water weeping from the diverter valve body
  • The valve fails to return to its rest position once the tap is closed

Before you order

  • Confirm the appliance model is a Main Multipoint BF or Multipoint BF ErP
  • Check the GC number on the appliance data badge against the model listed
  • Verify the existing part number 5110963 before ordering
  • Inspect the full diverter valve assembly for wear beyond the diaphragm

Not sure which part?

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