Ariston
Ariston Diaphragm Main Flow Switch 573596
Diaphragm main flow switch for the Ariston STYX SX 20 MFF gas boiler from serial number 92010000.
At a glance
- Also known as 1571172
£9.96
£8.30 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Ariston 573596 is a diaphragm main flow switch for Ariston gas boilers. It sits in the main water circuit and responds to flow through the boiler, operating the switch that signals a demand to the appliance. It is a serviceable component within the flow switch assembly rather than a complete control.
Signs this part needs replacing
- The boiler does not respond to a hot water draw-off, with no burner ignition on demand.
- Heating or hot water demand is recognised intermittently, giving inconsistent firing.
- The boiler fires late or drops out shortly after a tap is opened.
- The diaphragm is split, perished or hardened, so it no longer moves the switch reliably.
- Water is found weeping around the flow switch housing.
Before you order
- Confirm the appliance is an Ariston STYX SX 20 MFF.
- Check the boiler serial number is 92010000 or later.
- Verify the existing component is marked 573596 before ordering.
Compliance
| Barcode / EAN | 5411692088637 |
|---|---|
| Alternative numbers | 1571172 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ARISTON STYX SX 20 MFF - FROM SERIAL No 92010000 | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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