# Expansion Vessel Reflex N 18, 4 bar / 70°C, grey

**URL:** https://aio.lv/en/product--reflex-8204301--6001473
**Data updated:** 2026-03-11 11:50 (EET)
**Category:** Heating Radiators
**Manufacturer:** Reflex
**Manufacturer code:** 8204301
**EAN:** 4036705197765
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 42.14 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--reflex-8204301--6001473

## 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

Reflex N 18 expansion vessel designed for closed heating and cooling systems. Rated for 4 bar maximum working pressure and up to 70°C operating temperature. Compact grey vessel for absorbing thermal expansion, maintaining system pressure stability and protecting components from overpressure. Suitable for domestic and small commercial installations.

## Long description

Reflex N 18 expansion vessel for closed heating and cooling systems, designed to absorb thermal expansion and stabilise system pressure. The compact grey vessel is rated for a maximum working pressure of 4 bar and a maximum operating temperature of 70°C. It is intended to protect system components from overpressure and to reduce frequent pressure relief events in domestic and small commercial installations.
Advantages
The Reflex N 18 provides reliable pressure compensation in compact form, minimising pressure fluctuations and reducing stress on pumps, valves and heat generators. Its design supports straightforward integration into existing systems and offers durable performance within the specified temperature and pressure limits. The grey finish and compact dimensions facilitate installation in confined spaces often found in residential plant rooms.
Suitable for
Domestic central heating systems
Small commercial heating installations
Closed cooling circuits with similar operating conditions
Boiler and heat pump installations requiring pressure buffering
Key specifications
Nominal volume: 18 litres
Maximum working pressure: 4 bar
Maximum operating temperature: 70°C
Colour: grey
Type: expansion vessel for closed systems
How to use
Install the expansion vessel in a location that allows access for maintenance and pressure checking. Connect the vessel to the system at a suitable tapping point, ensuring correct orientation and secure fittings. Pre-charge the vessel to the recommended pre-charge pressure for the system, then commission the system and adjust the vessel pre-charge if necessary to achieve stable operating pressure. Follow standard installation practice for closed heating and cooling systems and use appropriate isolation and safety devices.
Usage recommendations
Regularly inspect the vessel for corrosion, physical damage and correct pre-charge pressure. Verify the system pressure during different operating states and adjust pre-charge pressure to match static system pressure. Replace the vessel if the diaphragm shows signs of failure or if the vessel no longer maintains the correct pressure range.

## FAQ

### How much does the Expansion Vessel Reflex N 18 — 4 bar / 70°C cost, and is it available for purchase?

The price is 50.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 75 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 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/6001473/68548077_large.webp