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Hamworthy Gas Valve 573407090

Hamworthy

Hamworthy Gas Valve 573407090

Gas valve for Hamworthy Milborne 501 and 502 wall hung condensing boilers, part number 573407090.

At a glance

  • Appliance family: Milborne 501 and 502 wall hung condensing boilers
  • Also known as 2064370
  • Gas valve replacement must be carried out by a Gas Safe registered engineer
Manufacturer part no.
573407090
Showing prices

£402.20

£335.17 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 Honeywell VK4115V1204 gas valve is a boiler gas control component supplied under Hamworthy part number 573407090. It regulates the flow of gas to the burner in Hamworthy Milborne 501 and 502 wall hung condensing boilers. The valve opens and closes on demand from the boiler's control system to support safe ignition and modulated firing.

Signs this part needs replacing

  • Boiler fails to ignite or locks out on a call for heat
  • No flame established, with the gas valve not opening
  • Intermittent firing or flame drop-out during operation
  • Whistling, buzzing or unusual noise from the valve body
  • Visible corrosion, debris or damage around the valve

Before you order

  • Confirm the boiler is a Hamworthy Milborne 501 or 502 wall hung condensing model
  • Check the existing valve is marked 573407090 or Honeywell VK4115V1204
  • Gas valve replacement must be carried out by a Gas Safe registered engineer
  • Check the manufacturer's parts list for any model-specific revisions before fitting

Not sure which part?

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