# Expansion Vessel Reflex DE 25L 7304013 for Domestic Hot Water (DHW)

**URL:** https://aio.lv/en/product--reflex-7304013--12038248
**Data updated:** 2026-03-12 16:47 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Reflex
**Manufacturer code:** 7304013
**EAN:** 4036705099168
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 85.99 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 71.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--reflex-7304013--12038248

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Reflex DE 25L expansion vessel (model 7304013) designed for domestic hot water (DHW) systems. The 25‑litre diaphragm vessel absorbs pressure fluctuations, protects piping and appliances from thermal expansion, and maintains system pressure. Suitable for installation in residential hot water circuits to reduce cycling of pumps and valves and ensure stable operation.

## Long description

The Reflex DE 25L expansion vessel for Domestic Hot Water (DHW) is a 25‑litre diaphragm vessel engineered to absorb pressure fluctuations in residential hot water circuits. It accommodates thermal expansion, reduces short cycling of pumps and valves, and helps maintain stable system pressure for reliable operation of piping and appliances. The vessel is suitable for use in closed domestic hot water systems where temperature changes cause volume and pressure variations.
Advantages
The diaphragm design separates the water and gas sides to ensure consistent pressure control and minimize maintenance. With a 25‑litre capacity, the vessel balances small to medium sized domestic systems, reducing mechanical stress on pumps and valves. Its compact build allows flexible placement near water heaters, boilers or circulation loops to improve system stability and extend component life.
Suitable for
 Residential domestic hot water systems
 Hot water circulation loops and storage tanks
 Systems requiring reduction of pump and valve cycling
 Installations where thermal expansion protection is needed
Key specifications
 Diaphragm type expansion vessel with separated water and gas chambers
 Nominal volume: 25 litres
 Intended application: domestic hot water (DHW) systems
 Materials suitable for potable hot water contact (diaphragm and vessel body)
 Compact footprint for installation near heaters or circulation lines
 Pre-charged gas side to compensate thermal expansion and stabilize pressure
How to use
Install the expansion vessel on the return or supply pipe of the domestic hot water circuit, close to the heat source or circulation pump, following local plumbing codes and manufacturer mounting recommendations. Ensure the vessel is mounted in a position that allows safe access to the gas valve for pressure checks. Set the pre-charge pressure to match the static system pressure before filling the system with water, then vent and pressurize the circuit. Regularly check the gas pre-charge and inspect connections for leaks during routine maintenance.
Usage recommendations
Confirm the system’s maximum working pressure and static pressure, and adjust the vessel pre-charge accordingly. Use a pressure gauge and a suitable pump to set and verify pre-charge. Schedule periodic inspections of the diaphragm vessel and fittings as part of normal system maintenance to ensure continued protection against thermal expansion and pressure fluctuations.

## FAQ

### How much does the Expansion Vessel Reflex DE 25L 7304013 cost, and is it available for purchase?

The price is 85.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 52 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 08.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Expansion Vessel Reflex DE 25L 7304013 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Reflex 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 Reflex 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/12038248/67525514_large.webp