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Viessmann Pressure Gauge 7834985

Viessmann

Viessmann Pressure Gauge 7834985

Viessmann pressure gauge, part number 7834985, a manometer used on Vitodens gas boilers.

At a glance

  • Also known as 2321240
Manufacturer part no.
7834985
Showing prices

£72.02

£60.02 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 pressure gauge, part number 7834985, is a manometer used to indicate water pressure within the boiler's sealed heating circuit. It is listed as a gas boiler spare for the Viessmann Vitodens appliance family. The gauge provides the pressure reading an engineer uses when checking system charge and topping up the circuit.

Signs this part needs replacing

  • The needle no longer returns to zero with the system depressurised
  • The gauge sticks, jumps or gives a reading that does not change with system pressure
  • The dial face is clouded, stained or holds condensation
  • Moisture or a leak is visible at the gauge body or its connection
  • The indicated pressure disagrees with the boiler's own fault indication or filling-loop reading

Before you order

  • Confirm the appliance model and serial number against the fit list above
  • Check the existing gauge or the boiler literature carries part number 7834985
  • Establish whether the fault lies with the gauge or with the system pressure itself before ordering

Not sure which part?

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