# Expansion Vessel Meibes BASEFLEX 50/1.5, 6 bar for central heating

**URL:** https://aio.lv/en/product--meibes-25306--12060705
**Data updated:** 2026-03-12 19:44 (EET)
**Category:** Heating Radiators
**Manufacturer:** Meibes
**Manufacturer code:** 25306
**EAN:** 8712874253063
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 87.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 72.72 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--meibes-25306--12060705

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Meibes BASEFLEX 50/1.5 is an expansion vessel designed for central heating systems, rated for 6 bar maximum working pressure. The unit provides 50-liter nominal capacity and a 1.5‑liter precharge or membrane specification indicated in the model name. It compensates thermal expansion, maintains system pressure and protects components from overpressure in residential and small commercial heating installations.

## Long description

Meibes BASEFLEX 50/1.5 is an expansion vessel for central heating systems with a nominal capacity of 50 liters and a maximum working pressure of 6 bar. The vessel compensates for thermal expansion of the heating medium, helps stabilize system pressure and reduces the frequency of automatic filling cycles. It is designed for installation in residential and small commercial heating circuits where reliable pressure management and protection of pumps, valves and piping are required.
Advantages
The BASEFLEX construction integrates a durable elastomer membrane that separates the air cushion from the heating fluid, ensuring consistent precharge performance and reducing air ingress. The compact vertical design and standard connection fittings simplify installation and replacement in existing systems. Rated for 6 bar working pressure, the vessel is suited to higher-pressure applications compared with lower-rated alternatives, providing additional margin for system safety.
Suitable for
Domestic central heating systems
Small commercial heating circuits
Closed-loop boiler and heat pump installations
Circuits requiring a 50‑litre expansion capacity and 6 bar rating
Key specifications
Nominal volume: 50 liters
Maximum working pressure: 6 bar
Membrane/precharge characteristic indicated by model: 1.5
Vertical, compact vessel design suitable for wall or floor mounting
Material: metal vessel with elastomer membrane (membrane type construction)
How to use
Install the expansion vessel in accordance with local regulations and the heating system manufacturer’s instructions. Mount the vessel at a convenient location on the return line or near the boiler/heat pump manufacturer’s recommended point, using appropriate fittings and isolation valves. Set or verify the precharge pressure of the air side before commissioning, ensuring it matches the static system pressure requirements. Perform initial leak testing, then bring the heating system to operating temperature while checking that the vessel accommodates thermal expansion and that system pressure remains within the expected range.
Usage recommendations
Regularly check the vessel’s precharge pressure and inspect for visible corrosion or membrane failure during scheduled maintenance. If system pressure behavior changes or the vessel shows signs of failure, isolate and replace the unit to maintain system protection. Use compatible fittings and follow manufacturer guidance for mounting orientation and precharge adjustment.

## FAQ

### How much does the Meibes BASEFLEX 50/1.5 expansion vessel cost, and is it available for purchase?

The price is 87.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 07.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Meibes BASEFLEX 50/1.5 expansion vessel be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Meibes 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 Meibes 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/12060705/67546257_large.webp