Ariston ACO Expansion Vessel 65101719 7L

Description

The ARISTON ACO EXPANSION VESSEL 65101719 is a brand-new genuine replacement component for selected Ariston ACO 27 and ACO 32 boilers. This standardised 7-litre expansion vessel is supplied with a 12-month warranty and should only be ordered after confirming the boiler model, edition and GC number.

The expansion vessel helps accommodate changes in water volume as the central-heating system heats up and cools down. It supports stable system pressure and helps protect the boiler and heating circuit from excessive pressure changes. Installation should be completed by a suitably qualified Gas Safe registered engineer.

Product details

Brand: Ariston
Part type: Expansion vessel
MPN: 65101719
Warranty: 12 months
Condition: New
Genuine: Yes
Capacity: 7 litres
EAN / GTIN: 5414849094550

Boiler compatibility

Ariston ACO 27 MFFI

ACO 27 MFFI – Edition 1, June 2004 – GC No. 47-116-34 (2320412000001)
ACO 27 MFFI GPL – Edition 4, April 2008 – GC No. 47-116-34 GPL
ACO 27 MFFI GPL – Edition 6, December 2010 – GC No. 47-116-34 GPL EDITION 6
ACO 27 MFFI MET – Edition 4, April 2008 – GC No. 47-116-34 MET
ACO 27 MFFI MET – Edition 6, December 2010 – GC No. 47-116-34 MET EDITION 6

Ariston ACO 27 RFFI

ACO 27 RFFI – Edition 2, May 2005 – GC No. 41-116-09 (2320515000001)
ACO 27 RFFI GPL – Edition 4, April 2008 – GC No. 41-116-09 GPL
ACO 27 RFFI GPL – Edition 6, December 2010 – GC No. 41-116-09 GPL EDITION 6
ACO 27 RFFI MET – Edition 4, April 2008 – GC No. 41-116-09 MET
ACO 27 RFFI MET – Edition 6, December 2010 – GC No. 41-116-09 MET EDITION 6

Ariston ACO 32 MFFI

ACO 32 MFFI – Edition 1, June 2004 – GC No. 47-116-35 (2320412000001)
ACO 32 MFFI GPL – Edition 4, April 2008 – GC No. 47-116-35 GPL
ACO 32 MFFI GPL – Edition 6, December 2010 – GC No. 47-116-35 GPL EDITION 6
ACO 32 MFFI MET – Edition 4, April 2008 – GC No. 47-116-35 MET
ACO 32 MFFI MET – Edition 6, December 2010 – GC No. 47-116-35 MET EDITION 6

Ariston ACO 32 RFFI

ACO 32 RFFI – Edition 2, May 2005 – GC No. 41-116-10 (2320515000001)
ACO 32 RFFI GPL – Edition 4, April 2008 – GC No. 41-116-10 GPL
ACO 32 RFFI GPL – Edition 6, December 2010 – GC No. 41-116-10 GPL EDITION 6
ACO 32 RFFI MET – Edition 4, April 2008 – GC No. 41-116-10 MET
ACO 32 RFFI MET – Edition 6, December 2010 – GC No. 41-116-10 MET EDITION 6

Delivery & Collection

Collection is available from our Newcastle showroom at Unit 5, Penn Street, Newcastle upon Tyne, NE4 7BG, usually on the same day, subject to stock availability. If the item is not in stock, collection is normally available the next working day. We also offer fast UK delivery through Royal Mail First Class or DPD Next Day, with most orders arriving within one to two working days. Boiler components should be installed by a suitably qualified Gas Safe registered engineer.

Warranty

This brand-new genuine Ariston boiler expansion vessel is supplied with a 12-month warranty. Warranty claims may be subject to inspection and confirmation that the component was correctly selected and professionally installed.

Returns

We accept returns within 30 days of delivery. The product must be unused, unfitted and returned in its original unopened packaging with all seals intact. We cannot accept returns for components that have been fitted, used, damaged or returned in an unsuitable condition. Please check the boiler model, GC number, edition, serial-number range and part number carefully before ordering.

If you need any help, our team is happy to assist. Please contact us by phone or WhatsApp chat.

Frequently Asked Questions

Is the Ariston 65101719 expansion vessel compatible with ACO 27 boilers?

Yes. The Ariston 65101719 expansion vessel is confirmed for the listed ACO 27 MFFI and ACO 27 RFFI models, including the supplied GPL and MET editions. Check the complete boiler model, edition and GC number before ordering.

Does this expansion vessel fit Ariston ACO 32 boilers?

Yes. It fits the confirmed ACO 32 MFFI and ACO 32 RFFI appliances listed above, including selected GPL and MET editions. Compatibility should not be based only on the ACO 32 model name because the edition and GC number may also be important.

How can I confirm that 65101719 is the correct replacement?

Check the manufacturer part number on the existing component or the boiler parts information. You should also confirm the full boiler model, MFFI or RFFI version, edition, fuel designation and GC number before ordering.

What symptoms may indicate an expansion-vessel problem?

Possible signs can include boiler pressure rising significantly while the heating is operating, pressure dropping again after the system cools, frequent repressurisation or water discharging through the pressure-relief pipe. These symptoms do not automatically confirm that the expansion vessel is defective, so the boiler should be inspected by a qualified engineer.

Does the Ariston ACO expansion vessel require professional installation?

Yes. The boiler must be safely isolated and the heating system pressure managed correctly during replacement. Installation and system checks should be completed by a suitably qualified Gas Safe registered engineer.