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Atag pipe expansion vessel q-solar
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Atag pipe expansion vessel q-solar S4494400

€ 62.42 incl. VAT

Original spare part Atag. Type: Pipe. Application: Boiler / Q25SC 200N OSS1. Delivery time: on request (please contact us). Supplier code: S4494400.

Special-order item — delivery time on request (please contact us) — non-returnable

SKU: 8139800 Categories: , Brand:

Price and stock checked on 20 October 2026.

Made-to-order item — ordered specially for you, see delivery time below
EU delivery from € 17.95 · Shipping & payment

Price incl. VAT. Any delivery costs are calculated in the basket — see shipping & delivery.

Does this fit my appliance?
ApplicationBoiler
Series / modelQ25SC 200N OSS1 and 2 other models
Atag numberS4494400
Article number8139800
Not sure? Search by article or manufacturer number or check with the manufacturer or your installer.
All spare parts for Atag Q25SC 200N OSS1 →
Made-to-order item — this spare part is not on our shelf and is ordered specially for you from the manufacturer or wholesaler, delivery time on request (please contact us). Specially ordered items cannot be returned: the manufacturer or supplier does not take them back. So check the type number of your appliance and the article number of the spare part beforehand. In doubt? Check with the manufacturer or your installer (see also returns).
8.9/10 WebwinkelKeur⚠ Made-to-order item: no returns possible iDEAL · Klarna · Bancontact 085-303 7272 ma–vr 08:00–17:00

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Atag pipe expansion vessel q-solar: original Atag spare part, type: Pipe. Application: Boiler (Q25SC 200N OSS1). Manufacturer number: S4494400; Instalpunt article number: 8139800.

According to the Atag parts lists, this part fits 3 models, including Atag Q25SC 200N OSS1, Atag Q25SC 380N OSS1 and Atag Q38SC 200N OSS1. The full list is under “Fits”.

Special-order item (delivery time on request (please contact us)): it is ordered specially for you from the manufacturer and is non-returnable.

Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer. Work on gas-carrying parts must be carried out by a qualified gas engineer.

Product information: Atag pipe expansion vessel q-solar S4494400

BrandAtag spare parts
Atag manufacturer numberS4494400
Instalpunt article number8139800
EAN8719638549189
Part typePipe (All Atag pipes, tubes and hoses · pipes, tubes and hoses of all brands)
ApplicationBoiler
Suitable for3 Atag models (see list)
DeliverySpecial-order item, delivery time on request (please contact us)
Price€ 62,42 incl. VAT
OriginSupplied through the official technical wholesale channel, under Atag number S4494400

Fits 3 Atag models

The part Atag pipe expansion vessel q-solar S4494400 is in the official parts list of these Atag appliances. Click a model for the complete parts list and exploded view.

Atag Boiler (3)

Check the rating plate of your appliance. Not sure whether this part fits? Check with the manufacturer or your installer; with the correct manufacturer number you can order it here directly.

More spare parts for this appliance

Position on the parts diagram

This spare part is shown as position 208 on the parts drawing. Open the drawing for the appliance and click the number to check that you have the right spare part.

Available: Pipe for the same appliances

This part is currently out of stock. These Atag parts of the same type are listed for at least one of the same appliance models and are available.

Before ordering, check the manufacturer number in the spare parts list or exploded view of your appliance.

Frequently asked questions about this item

Does the Atag pipe expansion vessel q-solar S4494400 fit my appliance?
This part is in the parts list of 3 Atag models, namely the Q25SC 200N OSS1, Q25SC 380N OSS1, Q38SC 200N OSS1. The model type is on the rating plate of your appliance. If in doubt, ask the manufacturer or your installer.
What is the delivery time of this made-to-order item?
This is a special-order item: we order it specially for you from the wholesaler. The expected delivery time is on request (please contact us). You can also see the delivery time next to the stock status at the top of this page.
Can I return this made-to-order item?
A specially ordered item is not taken back by the supplier, so returns are not possible. So check the article number and the rating plate of your appliance beforehand. Is something wrong with your order? Then contact us via info@instalpunt.nl. The full terms and conditions are on returns.
What does shipping cost?
Shipping costs € 17.95 to Austria, Denmark, Italy, Spain and Sweden and € 24.95 to other EU countries. In-stock items ordered before 2 pm are dispatched the same working day; delivery usually takes 3–5 working days. Details: Shipping.
I have a fault code, which part do I need?
Look up the code in the fault code finder: per brand and appliance it shows what the code means and which part goes with it. If the code is listed with this part, the part belongs to that fault.

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