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Vaillant Pressure Relief Valve 190727

Vaillant

Vaillant Pressure Relief Valve 190727

Pressure relief valve for Vaillant Ecomax and VUW series gas boilers, part number 190727.

At a glance

  • Also known as 1374080, N1456-D
Manufacturer part no.
190727
Showing prices

£45.55

£37.96 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Vaillant 190727 is a pressure relief valve for Vaillant Ecomax and VUW series gas boilers. It opens to discharge excess pressure from the heating circuit, protecting the boiler and system components. This valve is a serviceable component within the boiler's hydraulic assembly.

Signs this part needs replacing

  • Water dripping or discharging from the pressure relief valve discharge pipe when the system is not overheating.
  • Boiler pressure gauge reading rises and falls, or system pressure cannot be maintained.
  • Visible scale or debris around the valve outlet.
  • The valve weeps continuously after the system has been refilled or pressurised.
  • System pressure drops repeatedly, requiring frequent top-ups.

Before you order

  • Confirm your boiler model and GC number against the fitment list above.
  • Check the existing valve's part number or markings to ensure a match.
  • Ensure the system is depressurised and drained before replacement.
  • Verify that the new valve is the correct type for your boiler's heating circuit.

Not sure which part?

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