# Expansion vessel Meibes FLOFIX 12/4.0 10 bar – heating system accumulator 12 L, 4.0 bar pre-charge, max 10 bar

**URL:** https://aio.lv/en/product--meibes-25291--11589987
**Data updated:** 2026-02-15 18:41 (EET)
**Category:** Heating Radiators
**Manufacturer:** Meibes
**Manufacturer code:** 25291
**EAN:** 8712874252912
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 66.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 54.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--meibes-25291--11589987

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

Meibes FLOFIX 12/4.0 10 bar is a 12-litre expansion vessel for sealed heating and hot water systems. Designed with a 4.0 bar factory pre-charge and 10 bar maximum working pressure, it compensates for thermal volume changes to protect pumps, valves and piping. Suitable for residential and light-commercial heating installations to maintain stable system pressure and reduce maintenance needs.

## Long description

Meibes FLOFIX 12/4.0 10 bar is a 12-litre expansion vessel designed for sealed heating and hot water systems. With a factory pre-charge of 4.0 bar and a maximum allowable working pressure of 10 bar, the vessel compensates for thermal volume changes in closed circuits to stabilise system pressure and protect pumps, valves and piping. Constructed for residential and light‑commercial heating installations, it helps reduce maintenance by preventing overpressure events and maintaining reliable hydraulic balance.
Advantages
The FLOFIX expansion vessel integrates a durable bladder design and a corrosion-resistant steel shell to provide long service life under normal heating system conditions. Factory pre-charging at 4.0 bar removes the need for immediate commissioning adjustments in many applications and the 10 bar maximum working pressure covers a wide range of boiler and system configurations. Compact dimensions and standard connection fittings simplify installation in boiler rooms and distribution cabinets.
Suitable for
Closed domestic heating systems (radiators, underfloor heating)
Hot water circulation and sealed potable water circuits
Light commercial heating installations and small hydronic systems
Retrofit projects where space-efficient expansion vessels are required
Key specifications
Nominal volume: 12 litres
Factory pre-charge pressure: 4.0 bar
Maximum allowable working pressure: 10 bar
Type: diaphragm/bladder expansion vessel for closed systems
Typical connection: standard threaded fitting for wall or bracket mounting
How to use
Install the expansion vessel on the system return line or in the designated connection point of the heating circuit, following manufacturer and local plumbing codes. Before final commissioning, verify the pre-charge pressure with a pressure gauge and adjust if system requirements differ from the factory setting. Ensure secure mechanical mounting and proper hydraulic connections, then fill and vent the system to remove trapped air. Monitor system pressure during initial operation to confirm correct vessel function.
Usage recommendations
Check the pre-charge periodically and after major system work; maintain the vessel within its rated temperature and pressure limits. If the system shows frequent pressure drops or rapid cycling of pumps, inspect the bladder integrity and connections. For precise sizing in complex or large installations, consult hydraulic calculation data or a heating professional.

## FAQ

### How much does the Meibes FLOFIX 12/4.0 10 bar expansion vessel cost, and is it available for purchase?

The price is 66.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 02.07.2026 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 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/11589987/66695217_large.webp