How do I know if this expansion vessel is for my boiler?

Verify the reference 0020097328 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Saunier Duval (Vaillant Group) piece.

The expansion vessel absorbs the expansion of water when heated.

Does the pressure rise significantly when heating, or does the safety valve trip?

It usually indicates the expansion vessel is discharged.

Which models is it suitable for?

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Installation and recommendations

Check and recharge the air pre-charge of the expansion vessel.

What does refurbished mean and what coverage does it have?

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

RefurbishedHermann Expansion vessels

Expansion Vessel Hermann Micraplus Condens 25 A Ref. 0020097328

Name: Expansion Vessel Hermann Micraplus Condens 25 A Ref. 0020097328
Brand: Hermann
SKU: VEHMC25A
Price: 45 EUR
Availability: InStock

45 €VAT includedIn stock · 1 unit

Expansion vessel: reconditioned spare part that absorbs the expansion of water when heated. Useful if the pressure rises significantly when heating or if the safety valve trips. Compatible with Micraplus Condens 25-A, Micraplus Condens 30-A, MicraCom Cds 24-AS/1 (ref. 0020097328). Includes a one-year warranty and delivery within 2–4 working days in the EU.

Consult via WhatsApp

Not sure if it's your part? Send us a photo of the screen printing via WhatsApp and we'll confirm compatibility before you purchase.

Delivery in 2–4 working days

1-year warranty

14-day return

Technical support

Key Data

Reference: 0020097328
Brand: Hermann
Type of part: Expansion vessels
Available units: 1 unit in stock
Status: Refurbished
Warranty: 1 year
Shipping: 2–4 working days (EU)
Return: 14 days

The same part (ref. 0020097328) equips these models. Verified compatibility; check the reference before purchasing.

Hermann

Micraplus Condens 25-A
Micraplus Condens 30-A
MicraCom Cds 24-AS/1
MicraCom Cds 28-AS/1

Saunier Duval

Semia Condens 25-A
Semia Condens 30-A
Thelia Condens 25-A
Thelia Condens 30-A
Thelia Condens AS 25-A

Vaillant

Puma Cds 18/24 MKV-AS/1
Puma Cds 24/28 MKV-AS/1

How do I know if this expansion vessel is for my boiler?: Verify the reference 0020097328 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part. It is a Saunier Duval (Vaillant Group) piece.
What is it used for?: The expansion vessel absorbs the expansion of water when heated.
Does the pressure rise significantly when heating, or does the safety valve trip?: It usually indicates the expansion vessel is discharged.
Which models is it suitable for?: Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.
Installation and recommendations: Check and recharge the air pre-charge of the expansion vessel.
What does refurbished mean and what coverage does it have?: Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.