# Expansion/Pressure Vessel Reflex Zbiornik membranowy N 500L C.O. 8218300 – 500 L capacity

**URL:** https://aio.lv/en/product--reflex-8218300--12055005
**Data updated:** 2026-03-12 19:38 (EET)
**Category:** Heating Radiators
**Manufacturer:** Reflex
**Manufacturer code:** 8218300
**EAN:** 4036705110153
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 901.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 745.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--reflex-8218300--12055005

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Reflex Zbiornik membranowy N 500L C.O. (model 8218300) is a 500-liter membrane expansion/pressure vessel designed for central heating and closed hydronic systems. It provides hydraulic separation and compensates for thermal volume changes in heating circuits. Suitable for commercial or large residential boiler systems requiring a dedicated membrane tank to maintain system pressure and protect components.

## Long description

Reflex Zbiornik membranowy N 500L C.O. is a 500-litre membrane expansion and pressure vessel designed for closed hydronic and central heating systems. The vessel provides hydraulic separation and compensates for thermal volume changes in heating circuits, helping to stabilise system pressure and protect pumps, valves and other components in commercial and large residential boiler installations.
Advantages
The membrane design separates the liquid and gas phases, reducing air ingress and minimising corrosion risk inside the system. A 500-litre capacity offers substantial volume buffering for large systems, enabling more stable pressure behaviour during heat-up and cool-down cycles. The vessel is suitable for installation in systems that require a dedicated expansion volume to protect boiler and component longevity while improving operational reliability.
Suitable for
 Commercial boiler plants and large residential central heating systems
 Closed hydronic circuits requiring a dedicated expansion volume
 Systems where hydraulic separation and pressure dampening are needed
 Installations aiming to reduce pump cycling and pressure fluctuations
Key specifications
 Nominal volume: 500 litres
 Membrane (diaphragm) type separating liquid and gas phases
 Designed for closed heating and hydronic systems
 Provides hydraulic separation and thermal expansion compensation
 Suitable for commercial and large residential applications
How to use
Install the expansion vessel according to the system design and applicable regulations, positioning it in a location that allows safe access for inspection and maintenance. Ensure proper hydraulic connection to the heating circuit and verify that pre-charge pressure of the gas side matches the system requirements before filling. After installation and filling, bleed air from the system and check for leaks; adjust the system fill pressure so that the vessel operates within the recommended pressure range for the specific heating installation.
Usage recommendations
Verify compatibility with the system's maximum operating pressure and temperature. Regularly inspect the vessel and membrane condition during scheduled maintenance; check the pre-charge pressure and perform leak tests after any intervention. Follow local codes and the manufacturer's installation instructions for safe and reliable operation.

## FAQ

### How much does the Reflex Zbiornik membranowy N 500L C.O. 8218300 cost, and is it available for purchase?

The price is 901.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 03.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Reflex Zbiornik membranowy N 500L C.O. 8218300 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 Reflex 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 Reflex 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/12055005/67541050_large.webp