# Expansion Vessel CIMM SOLAR 18 L, Pressure Range 2.5–10 bar, Temperature -10 to +100 °C

**URL:** https://aio.lv/en/product--cimm-400018--12056989
**Data updated:** 2026-03-12 19:40 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** CIMM
**Manufacturer code:** 400018
**EAN:** 8033003530146
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 52.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 43.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cimm-400018--12056989

## 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

CIMM SOLAR 18 L expansion vessel designed for solar thermal and heating systems. Built for operating pressures from 2.5 to 10 bar and temperatures between -10 and +100 °C. Provides hydraulic compensation of thermal expansion, protects system components from overpressure, and reduces cavitation and water hammer; suitable for closed-loop solar collectors, boilers and heat exchangers.

## Long description

The CIMM SOLAR 18 L expansion vessel is engineered for closed-loop solar thermal and heating systems to manage thermal expansion and stabilize hydraulic pressure. Designed for operating pressures from 2.5 to 10 bar and temperatures from -10 to +100 °C, this expansion vessel reduces the risk of overpressure, minimizes cavitation and water hammer, and helps maintain consistent system performance in circulating solar collectors, boilers and heat exchangers.
Advantages
This expansion vessel offers a compact 18-litre capacity with a pressure range suitable for medium- and high-pressure solar and heating installations. Constructed to withstand fluctuating temperatures from sub-zero to high operating values, it provides reliable hydraulic compensation and contributes to prolonging the service life of pumps, valves and heat exchangers. The device supports stable system pressure, reducing maintenance needs and improving operational safety.
Suitable for
Closed-loop solar thermal collector circuits
Domestic and commercial boiler systems
Heat exchanger circuits and hydronic heating loops
Systems requiring protection against water hammer and cavitation
Key specifications
Nominal volume: 18 L
Operating pressure range: 2.5–10 bar
Operating temperature range: -10 to +100 °C
Application type: closed-loop solar and heating systems
How to use
Install the expansion vessel in the system at a location that allows connection to the primary circuit where pressure fluctuations occur, typically near the pump or manifold. Ensure correct orientation and secure mounting according to local installation standards. Pre-charge the vessel to the recommended pre-charge pressure for the specific system (matching the static system pressure) before connecting to the circuit. After connection, bleed any air from the system and verify pressure settings under normal operating temperature and load conditions.
Usage recommendations
Verify compatibility with system fluid and antifreeze concentration, maintain the pre-charge pressure periodically, and inspect for signs of corrosion or membrane failure. For safe and effective operation, follow local regulations and installer guidelines when integrating the expansion vessel into solar thermal or heating installations.

## FAQ

### How much does the CIMM SOLAR Expansion Vessel 18 L cost, and is it available for purchase?

The price is 52.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 55 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 CIMM 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 CIMM 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/12056989/67542967_large.webp