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Andrews Main Burner Orifice 7704042

Andrews

Andrews Main Burner Orifice 7704042

Main burner orifice (natural gas injector) for Andrews water heaters, part number 7704042.

At a glance

  • Part type: main burner orifice (injector)
  • Appliance family: Andrews water heaters
  • Also known as 1823158
Manufacturer part no.
7704042
Showing prices

£15.91

£13.26 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 Andrews 7704042 is a main burner orifice, also known as a gas injector, for natural gas appliances. It controls the flow of gas into the burner to suit the appliance's input rating. It is fitted across the Andrews water heater range, including the Classicflo RSC models.

Signs this part needs replacing

  • Weak, uneven or unstable burner flame
  • Sooting or a yellow flame at the burner
  • Poor ignition or flame lift-off
  • Gas rate outside the appliance's specified range
  • Visible debris or blockage in the orifice

Before you order

  • Check your appliance model against the fit list above.
  • Confirm the appliance is set up for natural gas (NG).
  • Verify the part number 7704042 against the manufacturer's parts list.

Not sure which part?

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