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header-product Flamco Contra Flex expansion vessel, hanging, 8 liters capacity, red color, for central heating systems, maximum pressure 3 bar
42.99 €

Flamco Contra Flex expansion vessel, hanging, 8 liters capacity, red color, for central heating systems, maximum pressure 3 bar

Flamco Contra Flex Expansion Vessel 8L (26073) Photo 1

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Flamco Contra Flex expansion vessel, hanging, 8 liters capacity, red color, for central heating systems, maximum pressure 3 bar

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Flamco Contra Flex expansion vessel, hanging, 8 liters capacity, red color, for central heating systems, maximum pressure 3 bar

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Short description

Flamco Contra Flex hanging expansion vessel with an 8-liter capacity, designed for closed central heating systems. This red pressure vessel safely absorbs water volume fluctuations caused by temperature changes, maintaining optimal system pressure up to 3 bar. Essential for protecting central heating installations, preventing pressure drops, and ensuring efficient, reliable daily operation in residential or commercial buildings.
Available for order: 47 pcs.
Warranty: 2 Years
SKU: 12696002
Manufacturer: FLAMCO
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
27.10.2026 {{selectedOffer.officeDeliveryString}}
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30.10.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
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Product information

Description

The Flamco Contra Flex expansion vessel is a hanging pressure vessel designed specifically for closed central heating systems. With an 8-liter capacity, this red expansion vessel safely absorbs water volume fluctuations caused by temperature changes, maintaining optimal system pressure up to 3 bar. It is an essential component for protecting central heating installations, preventing pressure drops, and ensuring efficient, reliable daily operation in residential or commercial buildings.

Advantages

This reliable expansion vessel provides effective pressure management for closed central heating systems by reliably accommodating changes in water volume as temperatures fluctuate. Constructed with durability in mind, the hanging design saves valuable floor space and facilitates straightforward installation. By maintaining the correct operating pressure, it helps prevent unnecessary wear on system components and contributes to the overall longevity and safety of the heating installation.

Suitable for

  • Closed central heating systems in residential homes
  • Small commercial heating installations
  • Systems requiring a hanging 8-liter expansion vessel
  • Installations operating up to a maximum pressure of 3 bar

When it may not be suitable

This expansion vessel is not suitable for open-vented heating systems or domestic hot water potable water supplies, as it is specifically engineered for closed central heating circuits. Additionally, systems requiring a capacity greater than 8 liters or operating at pressures exceeding 3 bar will necessitate a different model to ensure safe and compliant operation.

Key specifications

  • Capacity: 8 liters
  • Mounting type: Hanging
  • Maximum working pressure: 3 bar
  • Application: Closed central heating systems
  • Color: Red

How to use

Installation should be performed by a qualified heating technician in accordance with local regulations and manufacturer guidelines. The vessel must be securely mounted to a suitable wall using appropriate hanging hardware and connected to the return or supply line of the closed central heating system. Ensure that an isolation valve and draining point are included in the setup for future maintenance. Once installed, verify that the system is properly filled and that the pre-charge pressure aligns with the specific requirements of the heating installation before putting it into operation.

What to consider before purchase

  • Verify that the 8-liter capacity meets the specific expansion requirements of your heating system
  • Ensure the maximum pressure rating of 3 bar is compatible with your installation
  • Check that your system is a closed central heating circuit
  • Confirm that adequate wall space is available for hanging installation
Usage recommendations: Regularly inspect the expansion vessel annually as part of routine central heating maintenance to check for signs of wear, correct pressure levels, and secure mounting. Prompt professional checks are advised if unexpected pressure fluctuations occur within the heating system.

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Product comparison

The Flamco Contra Flex 8L expansion vessel is compared with alternative models Comap Solarix 35/2.5, Comap Solarix 25/2.5, Comap Contraflex 50L, and IMI Pneumatex STATICO SD 12.10. All reviewed devices are designed to compensate for water volume fluctuations in closed systems, but they differ significantly in capacity, intended application, and maximum pressure limits.

⚙️ The specifications comparison covers nominal capacity, maximum operating pressure, intended application, and compatibility with specific engineering systems.

ParameterFlamco Contra Flex 8LComap Solarix 35/2.5Comap Solarix 25/2.5Comap Contraflex 50LIMI Pneumatex STATICO SD 12.10Practical significance
Capacity8 liters35 liters25 liters50 litersSpecified in modelThe vessel size determines the water volume it can compensate for; smaller sizes suit compact setups, while larger ones fit extensive installations.
ApplicationCentral heatingSolar and heating systemsSolar and heating systemsCentral heatingSolar heating systemsSome vessels specialize strictly in heating, whereas alternatives are adapted to handle solar thermal circuits.
Maximum pressure3 bar10 bar10 bar3 barSpecified in modelHigh-pressure models (up to 10 bar) apply to solar circuits, while 3 bar vessels are tailored for standard domestic heating setups.

◎ The comparison of usage scenarios and buyer needs helps select the most suitable device depending on the scale and specifics of your system.

Use caseRecommended productWhy
Small central heating system in a residential buildingFlamco Contra Flex 8LFeatures a compact 8-liter capacity and pressure rating up to 3 bar, perfectly fitting smaller heating circuits.
Large-scale heating installationsComap Contraflex 50LThe large 50-liter capacity efficiently manages extensive systems and handles substantial volumes of heat transfer fluid.
Solar thermal systemsComap Solarix 35/2.5, Comap Solarix 25/2.5, or IMI Pneumatex STATICO SD 12.10Specialized models engineered to operate with solar collectors and higher operating pressure requirements up to 10 bar.
The Flamco Contra Flex 8L differs from alternatives through its compact size and design tailored specifically for small closed central heating systems with a maximum pressure limit of 3 bar. This vessel is most suitable for owners of smaller residential or commercial spaces who need a reliable and space-saving solution to protect a standard heating circuit. You should prefer the Flamco Contra Flex 8L if you do not require large volumes (such as the 25, 35, or 50-liter alternatives) or the specific high-pressure tolerance needed for solar installations.
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Customer reviews

Customer questions

FAQ

How much does the Flamco Contra Flex Expansion Vessel 8L (26073) cost, and is it available for purchase?

The price is 42.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 47 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 27.10.2026 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 FLAMCO 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 FLAMCO 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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