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Ariston Spring Main Flow Switch 571771

Ariston

Ariston Spring Main Flow Switch 571771

Ariston main flow switch spring, part number 571771, for use in compatible Ariston gas boiler models.

At a glance

  • Part type: spring for the main flow switch
  • Also known as SPRING-MAIN-FLOW-SWITCH, 1573006
Manufacturer part no.
571771
Showing prices

£3.31

£2.76 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Ariston 571771 is a spring for the main flow switch assembly used in Ariston gas boilers. It forms part of the flow switch mechanism that detects water movement through the appliance and signals demand to the control board. The spring returns the switch to its rest position once flow stops.

Signs this part needs replacing

  • The boiler fails to fire on a hot water demand despite adequate flow at the tap
  • Hot water delivery is intermittent, cutting in and out during draw-off
  • The flow switch does not return cleanly to its rest position when flow stops
  • Rattling or mechanical noise from the flow switch housing during operation
  • Repeated flow-related fault codes or lockouts on the appliance

Before you order

  • Confirm your appliance model and edition against the fits list above
  • Check the existing part number on the component or in the manufacturer's parts list
  • Verify that the fault lies with the flow switch spring rather than the switch assembly or diaphragm
  • Have the appliance isolated and depressurised before any work on the water circuit

Not sure which part?

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