We, at Spirotech design, manufacture and distribute products and solutions which are key in securing your comfort in heating and cooling, while being energy-efficient and cost-effective.

A standard expansion vessel consists of two chambers separated by a (fized) membrane. The system water is on one side of the membrane and gas with a predetermined pre-pressure is on the other side. A disadvantage of such an expansion vessel is that the system water is in contact with the inside of the vessel and corrosion can therefore occur, which can damage the installation.

Suboptimal pressure build-up in an installation has negative consequences for the performance and lifespan of the complete system. It is therefore essential to invest in a high quality pressure maintenance system tailored to the needs of your heating or cooling to ensure optimal pressure in the installation.

The system is designed to keep the pressure in the system constant, regardless of temperature fluctuations, and ensures safe and efficient operation of the heating or cooling system.

If you have any questions about our products, our solutions or need advice from our experts don't hesitate to contact us!

The expansion system is a more complex system and offers greater accuracy in regulating the pressure in the system. This makes the system ideally suited for larger and more complex heating or cooling systems.

Our EVN expansion vessels, with a volume of 4l to 140l, have a fixed pre-pressure with a bag membrane. This membrane ensures that the system water and the inner wall of the expansion vessel do not come into contact with each other, thus preventing corrosion (fromation of rust).

As the leading expert in system water quality, we were able to find solutions for issues that occur in your system. Failures in your system and low efficiency of your heating- and cooling system can be prevented by using the right products to protect your system due to the system water, the key element in every HVAC system.

The pocket membrane serves to absorb the volume change of the system water when heated. The pre-pressure in the gas space of the expansion vessel pushes the system water back into the installation as it cools.

Spirotech an expert and market leader in the field of system water quality in heating and cooling systems. Our products have been prescribed for many years by international boiler and heat pump manufacturers, installers and consultants in residential and non-residential projects.

As the leading expert in system water quality, we developed reliable standard and customized solutions to boost performance and protect investments by helping save energy, increase comfort, reduce wear and tear and maximizing the uptime of your HVAC system.

With Spirotech expansion vessels this is not an ordinary membrane but a balloon-shaped membrane, which enclosed the system water completely. This prevents the system water from coming into contact with the sheet steel wall of the vessel, thus preventing corrosion.

An optimal system pressure will keep system components functioning optimally and ensure trouble-free, cost-effective performance.

Secondary, an expansion vessel contributes to improving the efficiency and reliability of an installation by allowing the system components to function optimally and protect them.

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Whether you rely on a heating system to keep your home warm or a cooling system to combat the heat during the summer, expansion vessels with fixed pre-pressure and a bag membrane contribute to the smooth operation of your system.

The SpiroExpand range consists of hundreds of (expansion) vessels, expansion machines and accessories. From the most complex systems to simple solutions, there is a suitable SpiroExpand solution for every size of heating and cooling installation.

With the SpiroSelect tool you can, based on your system, make a selection of the best (total) solutions in the field of:

Primarily, closed expansion tanks are a safety feature for systems in which water is used as a heat transfer medium to transfer the energy from heating and/or cooling to a living or utility space.

COLORADO SPRINGS, Colo., Sept. 12, 2019 /PRNewswire/ -- As high pressure processing (HPP) grows to provide consumers foods with natural flavors and free of preservatives, the most important job of HPP is to keep consumers safe from harmful bacteria such as salmonella and listeria.  Heretofore, the gap in that process has been the inability to inspect individual Read more...

For larger and more complex heating or cooling systems with large pressure differences, it is advisable to use an expansion system, also known as a pressure maintenance system, to regulate the pressure. The main difference between the two is that an expansion vessel is a separate part of the system, while an expansion system is a complete system that includes multiple components.

Our products and solutions can be found everywhere in our living and working environments: in residential buildings, non-residential & commercial buildings and on industrial sites. They provide ease of use, performance and comfort while addressing the challenges of resource efficiency and climate change.