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Viessmann Non-Return Valve DN15 Typ OF15 7827999

Viessmann

Viessmann Non-Return Valve DN15 Typ OF15 7827999

Non-return valve, DN15, type OF15, for Viessmann Vitodens 111-W storage combi boilers.

At a glance

  • Also known as 2321982
Manufacturer part no.
7827999
Showing prices

£21.92

£18.27 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 non-return valve DN15 type OF15 is a hydraulic component used in the pipework of Vitodens 111-W storage combi boilers. It permits flow in one direction only, preventing backflow within the appliance circuit. The part is identified by Viessmann part number 7827999.

Signs this part needs replacing

  • Reduced or inconsistent flow through the affected circuit in the appliance
  • Water passing in the wrong direction, indicating the valve is no longer sealing
  • Noise or vibration from the valve area during pump operation
  • Visible scale, debris or damage at the valve body

Before you order

  • Confirm the appliance model and serial number against the fit list above
  • Check the existing valve is marked DN15 and type OF15 before removal
  • Verify the part number 7827999 against the valve currently fitted

Not sure which part?

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