Ariston
Ariston Pipe Expansion Vessel 999525
Expansion vessel connection pipe for Ariston gas boilers, listed under part number 999525.
At a glance
- Also known as 1577676
Showing prices
£20.48
£17.07 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 Ariston 999525 is the pipe that connects the expansion vessel to the water circuit on a range of Ariston gas boilers. It is listed by Ariston under the description PIPE (EXPANSION VESSEL) and sits within the expansion vessel group of gas boiler spares. The pipe carries water between the vessel and the boiler's primary circuit.
Signs this part needs replacing
- Water weeping or staining at the pipe connection to the expansion vessel
- Corrosion, pitting or scale build-up on the pipe
- Repeated loss of system pressure with no other obvious cause
- Restricted or blocked flow through the pipe affecting expansion vessel operation
Before you order
- Confirm your boiler model and edition against the fitment list above
- Check the GC number where one is shown for your appliance
- Verify the existing pipe is marked 999525
- Confirm the pipe is the expansion vessel connection and not another circuit pipe
Compliance
| Barcode / EAN | 5411692339852 |
|---|---|
| Alternative numbers | 1577676 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ECOSYSTEM 27 RFFI EDITION 1 LPG (OCT 2002) | 41-116-08 | 41-116-08 | — | — |
| ARISTON ECOSYSTEM 27 RFFI EDITION 1 NG (OCT 2002) | 41-116-08 | 41-116-08 | — | — |
| ARISTON ECOSYSTEM 27 RFFI EDITION 2 LPG (SEPT 2004) | 41-116-08 | 41-116-08 | — | — |
| ARISTON ECOSYSTEM 27 RFFI EDITION 2 NG (SEPT 2004) | 41-116-08 | 41-116-08 | — | — |
| ARISTON EST 23 MFFI - LPG EDITION 3 (26 AUG 2005) | — | — | — | |
| ARISTON EST 23 MFFI - NG EDITION 3 (26 AUG 2005) | — | — | — | |
| ARISTON EST 23 MFFI LPG EDITION 2 (01 DEC 2001) | — | — | — | |
| ARISTON EST 23 MFFI NATURAL GAS EDITION 2 (01 DEC 2001) | — | — | — | |
| ARISTON EXCALIBUR 100 LPG EDITION 1 (JAN 2004) | — | — | — | |
| ARISTON EXCALIBUR 100 NG | — | — | — |
Showing 10 of 55 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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.
manual
ARISTON appliance manual — ECOSYSTEM 27 RFFI EDITION 1 LPG (OCT 2002) (GC 41-116-08), ECOSYSTEM 27 RFFI EDITION 1 NG (OCT 2002) (GC 41-116-08), ECOSYSTEM 27 RFFI EDITION 2 LPG (SEPT 2004) (GC 41-116-08), ECOSYSTEM 27 RFFI EDITION 2 NG (SEPT 2004) (GC 41-116-08)
manualmanualARISTON appliance manual — MICROCOMBI 23 MFFI LPG EDITION 3 (FEB 2001) (GC 47-116-16), MICROCOMBI 23 MFFI NG EDITION 3 (FEB 2001) (GC 47-116-16), MICROCOMBI 23 MFFI NG EDITION 4 (APR 2002) (GC 47-116-16), MICROCOMBI 28 MFFI LPG EDITION 1 (APR 2003) (GC 47-116-24), MICROCOMBI 28 MFFI NG EDITION 1 (APR 2003) (GC 47-116-24)
manualmanualARISTON appliance manual — MICROSYSTEM 10 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-04), MICROSYSTEM 10 RFFI LPG EDITION 2 (FEB 2001) (GC 41-116-04), MICROSYSTEM 10 RFFI LPG EDITION 3 (FEB 2004) (GC 41-116-04), MICROSYSTEM 10 RFFI LPG EDITION 4 (SEPT 2004) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 2 (FEB 2001) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 3 (FEB 2004) (GC 41-116-04), MICROSYSTEM 10 RFFI NG EDITION 4 (SEPT 2004) (GC 41-116-04)
manualmanualARISTON appliance manual — MICROSYSTEM 15 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-05), MICROSYSTEM 15 RFFI LPG EDITION 2 (FEB 2001) (GC 41-116-05), MICROSYSTEM 15 RFFI LPG EDITION 3 (FEB 2004) (GC 41-116-05), MICROSYSTEM 15 RFFI LPG EDITION 4 (SEPT 2004) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 2 (FEB 2001) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 3 (FEB 2004) (GC 41-116-05), MICROSYSTEM 15 RFFI NG EDITION 4 (SEPT 2004) (GC 41-116-05)
manualmanualARISTON appliance manual — MICROSYSTEM 21 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-06), MICROSYSTEM 21 RFFI LPG EDITION 2 (JAN 2004) (GC 41-116-06), MICROSYSTEM 21 RFFI LPG EDITION 3 (SEPT 2004) (GC 41-116-06), MICROSYSTEM 21 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-06), MICROSYSTEM 21 RFFI NG EDITION 2 (JAN 2004) (GC 41-116-06), MICROSYSTEM 21 RFFI NG EDITION 3 (SEPT 2004) (GC 41-116-06), MICROSYSTEM 28 RFFI LPG EDITION 1 (AUG 2000) (GC 41-116-07), MICROSYSTEM 28 RFFI LPG EDITION 2 (JAN 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI LPG EDITION 3 (SEPT 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 1 (AUG 2000) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 2 (JAN 2004) (GC 41-116-07), MICROSYSTEM 28 RFFI NG EDITION 3 (SEPT 2004) (GC 41-116-07)
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