# Expansion Vessel (Open Horizontal) Kaps C413501020 — 20 L capacity for central heating systems

**URL:** https://aio.lv/en/product--kaps-c413501020--12055787
**Data updated:** 2026-03-12 19:39 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Kaps
**Manufacturer code:** C413501020
**EAN:** 5901549979565
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kaps-c413501020--12055787

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Open horizontal expansion vessel Kaps C413501020, 20 L capacity. Designed for central heating and hot water circulation systems to accommodate thermal expansion and maintain system pressure. Features a horizontal open-tank design suitable for mounting in boiler rooms or plant rooms. Used in residential and light commercial heating installations for stable operation and protection of piping and components.

## Long description

The Kaps Expansion Vessel C413501020 is an open horizontal tank with a 20 L capacity designed for central heating and hot water circulation systems. Its open horizontal configuration allows installation in boiler rooms and plant rooms where atmospheric venting is acceptable. The vessel accommodates thermal expansion, helps maintain stable system pressure and supports the safe operation of boilers, pumps and piping in residential and light commercial heating installations.
Advantages
The open horizontal design provides straightforward installation and access in confined boiler-room spaces while permitting visible water level and air interface control. With a 20 litre working volume, the vessel limits pressure fluctuations caused by thermal expansion and reduces stress on system components. Constructed for compatibility with typical central heating layouts, it is suitable for systems that use an open expansion arrangement and require reliable expansion capacity without integrated pressurisation elements.
Suitable for
Domestic central heating systems with open expansion circuits
Hot water circulation systems in small commercial or utility plant rooms
Boiler room installations where horizontal mounting and atmospheric venting are provided
Key specifications
Type: open horizontal expansion vessel
Nominal capacity: 20 litres
Orientation: horizontal
Application: central heating and hot water circulation systems
Installation location: boiler room / plant room mounting
How to use
Install the expansion vessel in a boiler room or plant room at a level and position that allows correct hydraulic connection to the system’s feed and return piping and provides access for inspection and venting. Connect the vessel to the system in accordance with local codes and the boiler manufacturer’s instructions, ensuring proper venting to atmosphere for the open arrangement. Commission the system by filling, venting trapped air and checking that the vessel accommodates thermal expansion without causing undesired pressure rises. Periodic inspection of the vessel, venting points and connections is recommended to confirm correct operation.
Usage recommendations
Use this open horizontal expansion vessel where the heating installation design specifies an open expansion arrangement and atmospheric venting. Ensure the installation complies with applicable local regulations and safety guidelines, and verify compatibility with the heating system layout before fitting.

## FAQ

### How much does the Kaps C413501020 20 L open horizontal expansion vessel cost, and is it available for purchase?

The price is 38.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 34 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 06.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Kaps products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Kaps service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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