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Main Sleeve 5110965

Main

Main Sleeve 5110965

Sleeve bush that sits under the diaphragm in the water valve of Main Multipoint BF and Multipoint BF ErP water heaters.

At a glance

  • Also known as 1160618
Manufacturer part no.
5110965
GC number
H18-145
Showing prices

£32.86

£27.38 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 5110965 sleeve is a bush that fits under the diaphragm inside the water valve assembly. It is a Main-manufactured component for the Multipoint BF family of water heaters, where it supports and locates the diaphragm within the valve body. Its condition affects how the diaphragm seats and how the valve responds to water flow.

Signs this part needs replacing

  • Water weeping or dripping from the water valve around the diaphragm housing
  • The diaphragm failing to seat correctly, causing the valve to operate erratically
  • Reduced or inconsistent hot water flow linked to the water valve
  • Visible scoring, swelling or distortion of the sleeve when the valve is opened
  • Water passing the sleeve and causing pressure loss within the valve

Before you order

  • Check the appliance data badge and confirm the model is a Main Multipoint BF or Multipoint BF ErP
  • Confirm the fault lies with the water valve and not the diaphragm itself
  • Inspect the sleeve for wear, scoring or swelling before ordering a replacement
  • Isolate the water and gas supplies before opening the water valve

Not sure which part?

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