# Expansion Vessel / Pressure Tank Hydroland NP.CWU.12.IB 12 L for Domestic Hot Water (CWU)

**URL:** https://aio.lv/en/product--hydroland-5900308748749--10662425
**Data updated:** 2026-03-11 11:54 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Hydroland
**Manufacturer code:** 5900308748749
**EAN:** 5900308748749
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hydroland-5900308748749--10662425

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Hydroland NP.CWU.12.IB is a 12‑litre diaphragm expansion vessel designed for domestic hot water (CWU) systems. The compact pressure tank absorbs volume changes and stabilizes system pressure to protect appliances and piping. Suitable for installation in hot water circuits, water heaters and boilers where a small capacity expansion vessel is required.

## Long description

Hydroland NP.CWU.12.IB is a 12-litre diaphragm expansion vessel designed for domestic hot water (CWU) systems. The compact pressure tank absorbs thermal expansion and stabilizes system pressure to protect water heaters, boilers and domestic piping. Built for small-capacity hot water circuits, this expansion vessel is suitable where space is limited and a reliable pressure buffer is required.
Advantages
The diaphragm design separates the water from the pre-charged nitrogen chamber, preventing corrosion and reducing maintenance needs. Its compact 12 L volume provides effective pressure absorption while occupying minimal installation space. Constructed for routine use in CWU systems, the vessel delivers consistent pressure dampening to reduce pump cycling and minimize stress on valves and joints.
Suitable for
Domestic hot water systems (CWU)
Water heaters and instantaneous boilers
Small boiler circuits and domestic plumbing installations
Locations with limited installation space
Key specifications
Nominal volume: 12 litres
Diaphragm/accumulator type: diaphragm separation between water and gas
Application: domestic hot water (CWU) systems
Connection and mounting: compact tank suitable for inline or wall-mounted installation where applicable
Operating function: absorbs thermal expansion and stabilizes system pressure
How to use
Install the expansion vessel in the hot water circuit according to local plumbing codes and manufacturer recommendations. Ensure the vessel is fitted downstream of the heat source and before check valves or backflow preventers so it can absorb expansion effectively. Verify and set the pre-charge pressure of the gas side to match the system static pressure before commissioning. Periodically inspect for leaks and verify the diaphragm integrity by checking pre-charge pressure at scheduled maintenance intervals.
Usage recommendations
Use the Hydroland 12 L expansion vessel in systems with matching static pressure ranges; check and adjust the pre-charge pressure to the system pressure before installation and after extended downtime. Avoid installing the vessel in direct contact with corrosive environments and follow local regulations for pressure equipment handling and disposal.

## FAQ

### How much does the Hydroland NP.CWU.12.IB 12 L expansion vessel cost, and is it available for purchase?

The price is 38.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 25 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 14.07.2026 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 Hydroland 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 Hydroland 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/10662425/57202535_large.webp