# Expansion Vessel (Open Horizontal) Kaps 25 L for Heating Systems

**URL:** https://aio.lv/en/product--kaps-c413501025--11426224
**Data updated:** 2026-03-11 12:06 (EET)
**Category:** Heating Radiators
**Manufacturer:** Kaps
**Manufacturer code:** C413501025
**EAN:** 5901549979572
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 32.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kaps-c413501025--11426224

## 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 25 L designed for use in central heating (CO) systems. This 25-litre open-type vessel provides volume compensation and pressure stabilization in heating installations. Suitable for horizontal mounting, it helps prevent overpressure and air accumulation in boilers and circulation circuits in residential or light-commercial heating applications.

## Long description

Open horizontal expansion vessel Kaps 25 L for heating systems is a 25-litre open-type tank designed to provide volume compensation and pressure stabilization in central heating (CO) installations. Intended for horizontal mounting, the vessel integrates into boiler rooms and circulation circuits to help manage thermal expansion of water and reduce the risk of overpressure. The construction is suitable for residential and light-commercial heating systems where an open expansion vessel is required.
Advantages
The Kaps 25 L open horizontal expansion vessel offers reliable simple operation and straightforward installation thanks to its horizontal orientation and accessible connections. Its 25-litre capacity provides measurable buffer volume for small to medium heating circuits, helping to stabilize system pressure during temperature changes. The open design allows air to escape and avoids closed-system sealing requirements, simplifying maintenance and inspection.
Suitable for
Residential central heating systems
Light-commercial heating installations
Boiler rooms with horizontal mounting space
Systems requiring open expansion vessels for pressure relief and air separation
Key specifications
Type: open expansion vessel, horizontal orientation
Nominal volume: 25 litres
Application: central heating (CO) systems
Mounting position: horizontal
Function: volume compensation and pressure stabilization during thermal expansion
How to use
Mount the vessel in a horizontal position in the boiler room or circuit location specified by system design. Connect the vessel to the heating circuit using appropriate piping and fittings, ensuring correct alignment and secure joints to prevent leaks. Fill and vent the heating system following standard commissioning procedures for open expansion systems, monitoring water level and free air space in the vessel. Perform regular visual inspections for corrosion, deposits or leakage and ensure the vessel remains accessible for maintenance.
Usage recommendations
Install the expansion vessel where it can be inspected and drained if necessary. Use corrosion-resistant connections and follow local standards for open expansion systems. Regularly check system water quality and maintain the boiler room to prevent contamination or obstruction of the vessel. For system sizing beyond typical residential loads, verify that 25 litres of buffer volume is adequate or consult a heating professional to select an appropriately sized expansion vessel.

## FAQ

### How much does the Kaps Expansion Vessel 25 L (Open Horizontal) cost, and is it available for purchase?

The price is 38.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 22 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

https://aio.lv/img/cache/product/11426224/66066681_large.webp