Description
ATAG 64990914 Expansion Vessel 8 Ltr Premier
ATAG replacement part with manufacturer part number 64990914. This exact item is a genuine, brand-new Atag product. It is intended for the compatible appliances shown below, where listed. Match the boiler model and MPN before ordering.
Product Details
Brand: Atag
Manufacturer part number (MPN): 64990914
Condition: Genuine, brand new
Warranty: 12 Months
Boiler Compatibility
Check the exact appliance model and manufacturer part number before ordering. See the GC Number tab for the verified GC references.
This part fits the following 3 appliances:
Listed compatible appliances
- Atag PREMIER E-SHR 15 SYSTEM NG
- Atag PREMIER E-SHR 24 SYSTEM NG
- Atag PREMIER E-SHR 24T SYSTEM NG
Ordering and support
Before you order
Use the manufacturer part number as your main check. Do not rely on a similar-looking part. Compare the appliance model and the GC Number tab before ordering.
Technical FAQs
How do I check that this is the correct replacement part?
Use manufacturer part number 64990914 as the main check. Match it to the old part or appliance documentation, not only to a similar-looking product.
Will this part fit my boiler?
This exact part is listed for 3 appliance model(s). Check your appliance model, MPN and the GC Number tab before ordering.
Can a similar-looking part be used instead?
Do not rely on shape or appearance alone. Check the manufacturer part number and the exact appliance model before ordering a replacement.
Does the part number identify the cause of a boiler fault?
No. A part number helps identify a replacement item but does not diagnose a fault. Ask a suitably qualified professional to identify the cause where required.
Who should fit and test this part?
Installation and testing should be completed by a suitably qualified professional where required. This exact item is a genuine, brand-new Atag product.
Related Atag parts
Browse related Atag boiler parts and Atag Expansion Vessels.
Help and returns
For help checking this part, message us on WhatsApp. This item includes a 12-month warranty. Returns are subject to the 30-day returns policy.
Product check
Clear identification matters. Check the manufacturer part number before you order.
Installation and testing should be completed by a suitably qualified professional where required.







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