# Expansion vessel for domestic hot water CIMM ACS 08 L, capacity 8 L, pressure 2.5/10 bar, temperature -10 to +100 °C

**URL:** https://aio.lv/en/product--cimm-510842--12036907
**Data updated:** 2026-03-12 16:45 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** CIMM
**Manufacturer code:** 510842
**EAN:** 8033003521090
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 28.92 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cimm-510842--12036907

## 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

CIMM ACS 08 L is a diaphragm expansion vessel for domestic hot water systems (c.w.u.), with an 8 L capacity. Rated for working pressures shown as 2.5/10 bar and an operating temperature range of -10 to +100 °C. Designed to absorb thermal expansion in closed hot-water circuits, it prevents overpressure, reduces cycling of pumps and protects fittings in residential and light-commercial installations.

## Long description

The CIMM ACS 08 L is a diaphragm expansion vessel designed for domestic hot water systems with an 8 litre capacity. It is intended to absorb the thermal expansion of water in closed hot-water circuits, maintaining stable pressure levels and protecting piping, valves and fixtures. The vessel operates across a wide temperature range and is suitable for typical residential and light-commercial installations where a compact expansion solution is required.
Advantages
The diaphragm design separates the water from the gas cushion, reducing the risk of corrosion and ensuring consistent pressure response over repeated thermal cycles. Its 8 L capacity provides a balance between compact size and useful expansion volume for small to medium hot water circuits. Rated for operation at elevated temperatures, the vessel supports systems that experience a wide range of water temperatures while helping reduce pump cycling and minimize pressure fluctuations.
Suitable for
Domestic hot water (c.w.u.) systems in single-family homes
Small apartments and flats
Light-commercial installations with limited hot-water circuits
Systems requiring protection against overpressure and frequent pump cycling
Key specifications
Capacity: 8 litres
Working pressure range: up to 10 bar, with a notable intermediate rating at 2.5 bar for typical pre-charge conditions
Operating temperature range: -10 °C to +100 °C
Diaphragm-type internal separation between water and gas cushion
Compact cylindrical design suitable for wall-mounted or floor-standing installations depending on fittings
How to use
Install the expansion vessel into the closed hot-water circuit at a location recommended by the system designer or installer, typically near the boiler, hot-water storage tank or circulation pump. Ensure correct orientation and secure mounting according to local codes and manufacturer installation instructions. Pre-charge the gas side to the specified system pressure before final connection, then connect to the system and check for leaks. Regularly inspect pre-charge pressure and diaphragm condition as part of routine maintenance to ensure continued performance.
Usage recommendations
Verify that the vessel pre-charge matches the static pressure of your system and that the selected capacity suits the expansion volume of your installation. For systems operating near the upper temperature limits, ensure surrounding components and fittings are rated accordingly. Schedule periodic inspections of pressure and diaphragm integrity to maintain reliable operation and prevent service interruptions.

## FAQ

### How much does the CIMM expansion vessel ACS 08 L cost, and is it available for purchase?

The price is 34.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 72 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

https://aio.lv/img/cache/product/12036907/67524216_large.webp