Expansion Vessels and Accessories

A reliable heating system is not possible without a good expansion vessel. When the temperature rises, the water in your central heating system expands, causing the pressure in the system to increase. The expansion vessel absorbs these pressure differences, so that your pipes and boiler are protected against overload. On this page you will find everything about Flamco expansion vessels and the associated brackets and accessories , including smart pressure maintenance solutions such as the Flexcon PA Autofill .

What do you use an expansion vessel for?

• Pressure absorption : When water heats, it expands. Without an expansion vessel, the pressure in the system can become too high, which can lead to leaks, malfunctions or damage to your boiler.
• Stable system : An expansion vessel ensures constant pressure in your heating system, which improves the efficiency and lifespan of your boiler and radiators.
• Prevents unwanted venting : If the pressure becomes too high, air or water can escape via the safety valve. With a well-dimensioned expansion vessel, your system remains “closed” for longer and you prevent unnecessary topping up.

Features of Flamco expansion vessels

In our webshop you will find various types of Flamco expansion vessels with different specifications:

1. Content/capacity (liters)
   The larger your system (and the more water content), the larger the expansion vessel must be. Also take into account the desired working pressure.

2. Maximum working pressure
   Expansion vessels are designed for a certain pressure (e.g. 3 bar, 6 bar or higher). Always check the pressure specifications of your boiler and your pipework.

3. Construction and orientation
   Some expansion vessels are wall-mounted (vertical), while others are suitable for horizontal placement. Flamco offers various models to suit your installation.

4. Material and membrane
   The quality of the membrane in the vessel also determines the lifespan. Flamco is known for durable rubber membranes that are resistant to high temperature and pressure differences.

Flexcon PA Autofill: pressure maintenance and automatic refilling

On the Flamco website you can read extensively about the Flexcon PA Autofill , an innovative pressure maintenance assistant. This system:

• Continuously monitors the pressure in your central heating system.
• Automatically refills when pressure drops below a set value, so you don't have to add water manually.
• Prevents excessive pressure through integrated safety, which minimizes the chance of malfunctions.

Do you have a large or complex installation, or do you simply not want to refill manually all the time? Then the Flexcon PA Autofill is a smart solution for maximum security and comfort.

Brackets and accessories

For safe and correct installation of your expansion vessel, we also offer associated Flamco brackets and mounting materials:

• Wall brackets : Specially designed for the diameter and weight of the barrel, so that it can be mounted stably and securely.
• Installation kits and accessories : Think of filling taps, non-return valves or pressure gauges to professionally finish your system.
• Safety valves : In some situations an additional safety valve is required, depending on the boiler regulations and the maximum working pressure.

What should you pay attention to when choosing an expansion vessel?

1. Capacity and maximum pressure
   Match the content (litres) and pressure class to your boiler and system size. A tank that is too small can cause the pressure to still rise too high.
2. Installation type
   Do you have a traditional central heating system or a modern installation with low temperature (LT) heating? Sometimes other specific requirements apply (e.g. corrosion protection).
3. Maintenance and lifespan
   A quality expansion vessel from Flamco will last a long time, but can wear out over time. Check the pre-air pressure regularly or have an installer do this.

Need advice?

With our Flamco expansion vessels , associated mounting materials and the Flexcon PA Autofill, you have all the ingredients for an optimally pressure-controlled central heating system. Are you stuck or do you have questions about dimensions and installation? Feel free to contact us — we are happy to help you!

Choose a reliable and efficient heating system with the Flamco solutions from viawww.nl .