Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Andrews Flue Backflow Preventative Device 7709315

Andrews

Andrews Flue Backflow Preventative Device 7709315

Flue backflow preventative device for Andrews Maxxflo EVO water heaters, part number 7709315.

At a glance

  • Appliance family: Maxxflo EVO water heaters
  • Also known as 8904255
Manufacturer part no.
7709315
Showing prices

£143.21

£119.34 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 flue backflow preventative device is manufactured by Andrews for the Maxxflo EVO range of water heaters. It sits in the flue path and prevents flue gases from flowing back into the appliance. The part is identified by the number 7709315.

Signs this part needs replacing

  • Flue gases detected spilling or backflowing at the appliance
  • Combustion analyser readings outside the expected range during servicing
  • Visible corrosion, distortion or mechanical damage to the device
  • Appliance lockout or flame failure linked to flue performance
  • Draught or odour around the flue terminal

Before you order

  • Confirm the appliance model and gas type against the fit list
  • Check the existing part number 7709315 on the appliance or in the manufacturer's parts list
  • Verify the appliance is an Andrews Maxxflo EVO unit
  • Have the appliance serial number to hand when checking compatibility

Not sure which part?

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