Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Viessmann Water Expansion Vessel 7823182

Viessmann

Viessmann Water Expansion Vessel 7823182

Viessmann 7823182 water expansion vessel, a component used to absorb water volume change in sealed heating systems.

At a glance

  • Also known as 2321472
Manufacturer part no.
7823182
Showing prices

£363.91

£303.26 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 Viessmann 7823182 is a water expansion vessel carrying manufacturer part number 7823182. It is a pressure vessel used in sealed heating systems to accommodate the change in system water volume as the water heats and cools. Without a vessel of this type, the resulting pressure rise across a sealed system would be taken up by the safety valve.

Before you order

  • Confirm the part number 7823182 against the appliance data plate, manual or existing component before ordering.
  • Establish the connection size, vessel capacity and pre-charge pressure the installation requires, as these are not listed in the supplied information.
  • Check that the vessel itself is the cause of the pressure fault; a discharge from the safety valve or repeated pressure loss can also come from a failed filling loop, a blocked expansion pipe or an incorrectly charged system.
  • Verify the vessel will physically fit the available space and that the connection will align with the existing pipework.

Not sure which part?

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