# Expansion vessel VAREM LR CE 18 L 3/4" gas connection, max pressure 6 bar

**URL:** https://aio.lv/en/product--varem-ur018231cs0a2000--9517575
**Data updated:** 2026-03-12 16:26 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** VAREM
**Manufacturer code:** UR018231CS0A2000
**EAN:** 8034108706870
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--varem-ur018231cs0a2000--9517575

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

VAREM LR CE expansion vessel with 18 L nominal volume, 3/4" gas connection and maximum working pressure 6 bar. Designed to absorb thermal expansion in closed heating and hot water systems, it protects piping and components from pressure spikes. Suitable for residential and light commercial boilers, hydronic circuits and solar thermal setups where a compact diaphragm vessel is required.

## Long description

The VAREM LR CE 18 L expansion vessel with a 3/4" gas connection and maximum working pressure of 6 bar is designed to control pressure changes caused by thermal expansion in closed heating and hot water systems. With an 18-litre nominal volume and a compact cylindrical body, this diaphragm vessel separates the system fluid from the pre-charged gas chamber, maintaining stable pressure and protecting pipes, pumps and valves from pressure spikes and water hammer. The vessel is suitable for domestic and small commercial installations where limited space and reliable pressure management are required.
Advantages
The VAREM LR CE 18 L features a durable elastomer diaphragm that ensures a consistent separation between water and gas, reducing air absorption and loss of pre-charge. Its 3/4" gas connection provides compatibility with common plumbing fittings and allows straightforward installation and servicing. Rated for a maximum working pressure of 6 bar, the vessel is appropriate for typical low- to medium-pressure hydronic systems. The compact 18-litre capacity offers an effective balance between system protection and space efficiency.
Suitable for (tasks / use cases)
Residential central heating systems
Small commercial boilers and hydronic circuits
Domestic hot water systems with closed circuits
Solar thermal installations with compact expansion requirements
Key specifications
Nominal volume: 18 litres
Connection type: 3/4" gas connection
Maximum working pressure: 6 bar
Vessel type: diaphragm (pre-charged gas chamber, water-separated)
Application: closed heating and hot water systems, solar thermal circuits
How to use
Mount the expansion vessel on a stable support close to the boiler or within the hydronic circuit using appropriate brackets or fittings. Before connecting, check and adjust the pre-charge pressure of the gas chamber to match the static fill pressure of the system, typically measured with the circuit drained or at recommended system pressure. Connect the 3/4" gas fitting to the system piping, ensuring sealed threads and correct orientation for access during maintenance. After installation, pressurise the heating system and inspect for leaks, then verify that the vessel responds to temperature-related pressure changes during initial operation.
Usage recommendations
Check the vessel pre-charge periodically and before winter commissioning; if the diaphragm shows signs of deterioration or the vessel fails to control pressure, replace it. Use compatible fittings and isolation valves to allow easy removal for maintenance. For systems with higher fill pressures or larger thermal expansion volumes, select a vessel with appropriate capacity and pressure rating.

## FAQ

### How much does the VAREM LR CE 18 L expansion vessel cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 152 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 19.06.2026 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 VAREM 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 VAREM 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

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