# Expansion vessel for domestic hot water CIMM ACS 24 L, pressure 2.5/8 bar, temperature -10 to +100 °C

**URL:** https://aio.lv/en/product--cimm-512442--11888170
**Data updated:** 2026-03-09 23:58 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** CIMM
**Manufacturer code:** 512442
**EAN:** 8033003522103
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 62.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 51.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cimm-512442--11888170

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Membrane expansion vessel CIMM ACS 24 L designed for domestic hot water (DHW) systems. Nominal volume 24 litres, maximum working pressure values indicated 2.5/8 bar and operating temperature range from -10 °C to +100 °C. Used to compensate thermal expansion in closed hot-water circuits, protect fittings and reduce pressure fluctuations in boilers, heaters and storage tanks.

## Long description

The Expansion vessel for domestic hot water CIMM ACS 24 L is a membrane-type pressure vessel intended for closed DHW systems. It has a nominal volume of 24 litres and is built to accommodate thermal expansion in domestic hot-water circuits. The vessel supports operation across a wide temperature range from -10 °C to +100 °C and is designed to reduce pressure fluctuations and relieve stress on boilers, heaters and storage tanks connected to the system.
Advantages
The device features a membrane design that separates the water from the pre-charged gas chamber, ensuring consistent pressure buffering and minimizing waterlogging. Compact construction and nominal capacity make it suitable for most household hot-water systems while maintaining stable hydraulic conditions. Its temperature tolerance allows use with typical domestic heaters, and the rated maximum working pressures support safe operation within common DHW installations.
Suitable for
Closed domestic hot-water (DHW) systems
Boiler and water heater installations requiring thermal expansion compensation
Hot-water storage tanks and accumulators
Systems where pressure fluctuation reduction and protection of fittings are needed
Key specifications
Nominal volume: 24 litres
Maximum working pressure: up to 8 bar (with an intermediate reference at 2.5 bar for specific operating conditions)
Operating temperature range: -10 °C to +100 °C
Membrane (diaphragm) separation between fluid and gas chamber
Designed for installation in closed hot-water circuits
How to use
Install the expansion vessel on the return line or at a suitable point in the closed DHW circuit following local plumbing codes and manufacturer installation guidelines. Verify the pre-charge pressure of the gas chamber before connection and adjust it to match the static system pressure if necessary. Mount the vessel on an appropriate bracket or support to prevent mechanical stress on connections. After installation, fill and pressurize the system, then inspect for leaks and correct operation of the pressure-buffering function.
Usage recommendations
Check the pre-charge regularly and inspect the membrane for integrity during scheduled maintenance. Ensure the vessel’s pre-charge is compatible with the system’s static pressure and consider using an automatic air-vent and pressure gauge for ongoing monitoring. Replace the expansion vessel if signs of membrane failure, persistent waterlogging, or pressure instability occur.

## FAQ

### How much does the Expansion vessel CIMM ACS 24 L cost, and is it available for purchase?

The price is 62.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 115 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 07.07.2026 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

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