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Hamworthy By-Pass Solenoid Valve 533903021

Hamworthy

Hamworthy By-Pass Solenoid Valve 533903021

Hamworthy by-pass solenoid valve, part 533903021, for LPG propane gas supplies on Hamworthy gas boilers.

At a glance

  • Also known as 2062124
Manufacturer part no.
533903021
Showing prices

£380.23

£316.86 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 Hamworthy 533903021 is a by-pass solenoid valve that acts as an active governor on LPG (propane) gas supplies. It is a 1/2 compact automatic gas valve, listed as the second gas valve in the appliance gas train and referenced as SIT Gas Nova 0822-114. It is used on Hamworthy gas boilers, including the Wessex 200HE floor standing range.

Signs this part needs replacing

  • Boiler fails to light or locks out during the ignition sequence
  • Intermittent or complete loss of gas flow to the burner
  • Unstable flame or poor modulation during operation
  • Gas valve fault codes or repeated lockouts on the boiler controls
  • Audible clicking from the valve without corresponding gas flow

Before you order

  • Confirm your appliance model against the fit list above
  • Check that the installation is LPG (propane), as this valve is specified for LPG
  • Verify part number 533903021 against the manufacturer's parts list for your boiler
  • Gas valve work must be carried out by a competent, registered engineer

Not sure which part?

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