# Expansion Tank Reflex DD 8L for Domestic Water, Model 7308000, 8 L Capacity

**URL:** https://aio.lv/en/product--reflex-7308000--11191770
**Data updated:** 2026-03-11 12:01 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Reflex
**Manufacturer code:** 7308000
**EAN:** 4036705001406
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 88.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 73.13 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--reflex-7308000--11191770

## 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

Reflex Expansion Tank DD 8L (model 7308000) is a diaphragm-type pressure vessel designed for domestic water systems with an 8-litre capacity. It accommodates thermal expansion, stabilizes system pressure and reduces pump cycling. Suitable for household boilers, hot water circuits and closed potable water installations where control of pressure fluctuations and protection against overpressure is required.

## Long description

Reflex Expansion Tank DD 8L (model 7308000) is a diaphragm-type pressure vessel designed for domestic water systems with an 8-litre capacity. The tank accepts thermal expansion in closed potable water and heating circuits, stabilizes system pressure and reduces short cycling of pumps. Its compact vertical design and corrosion-resistant steel shell with a pre-charged elastomer diaphragm make it suitable for installation near household boilers and hot water distribution points where reliable pressure control and protection against overpressure are required.
Advantages
The expansion tank provides consistent pressure cushioning and reduces the frequency of pump starts, which extends pump life and improves system efficiency. The diaphragm separates the water from the pre-charged air cushion to prevent waterlogging and preserve function over time. Its compact footprint and standardized connections simplify installation in boiler rooms or utility spaces. The tank is made from durable materials that are compatible with potable water and typical domestic heating water qualities.
Suitable for
 Domestic hot water systems and potable water installations
 Household boilers and small central heating circuits
 Closed water circuits requiring pressure stabilization and overpressure protection
 Applications where reducing pump cycling is important
Key specifications
 Nominal volume: 8 litres
 Diaphragm-type separated vessel (water/air separation)
 Compact vertical steel shell with corrosion protection
 Pre-charged air cushion for immediate pressure control
 Suitable for potable water and domestic heating circuits
How to use
Install the expansion tank on the return line or at a location recommended by the boiler or system manufacturer, ensuring the connection orientation and mounting are secure. Verify the pre-charge pressure of the air side before connection and adjust if necessary to match the system cold fill pressure. After installation, fill and pressurize the system slowly, then check for leaks and proper diaphragm operation by observing pressure stability and pump cycling behavior. Periodic checks of pre-charge pressure and visual inspection of mounting and pipe connections will help maintain reliable function.
Usage recommendations
Set the tank pre-charge to the system's static fill pressure minus 0.2–0.3 bar, and carry out annual visual inspections and pre-charge checks. Replace the tank if the diaphragm shows signs of failure or if persistent waterlogging occurs despite proper pre-charge adjustments.

## FAQ

### How much does the Expansion Tank Reflex DD 8L (7308000) cost, and is it available for purchase?

The price is 88.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 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, Installment. All transactions are 100% secure and encrypted.

### Can Expansion Tank Reflex DD 8L (7308000) 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/11191770/61967032_large.webp