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Functions of pressure-maintaining systems
The correct pressure conditions are a fundamental prerequisite for the proper functioning of heating, solar and cooling water systems as well as pressure boosting systems. Like all other substances, water changes its volume when the temperature changes. Unlike other liquids, however, water does not expand proportionally to temperature. Since water is incompressible, this means that temperature changes in a closed system can cause a rapid increase in pressure. Reliable pressure maintenance can be achieved – depending on the application – through two different pressure maintenance systems:
static pressure-maintaining systems
dynamic pressure-maintaining systems
Static pressure-maintaining systems
- Functions without power, compressor or pump
- Durable, wear-resistant membrane
- Can be used as an expansion, buffer or control vessel
A simple and intelligent solution
Expansion vessels act as expansion or buffer vessels without the need for power, a compressor or a pump. This functionality is so simple: a membrane separates the vessel into a water chamber and a gas chamber and prevents the gas diffusing into the water.
Expansion vessels must compensate volumetric fluctuations between the maximum and minimum temperature. Products from the Reflex range are used as expansion vessels in heating, solar and cooling water systems while products from the Refix range are used to save potable water in water heating systems.
Buffer and control vessels have to temporarily store the difference between the pumped volume flow and the required volume flow. Control vessels are also used when it comes to reducing the switching frequency of a supply device. In general, products from the Refix range are used as buffer vessels in pressure-boosting systems while the products from the Reflex range are used as control vessels in pump-controlled pressure maintenance stations.
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Range brochure
Expansion vessels
Wherever the right pressure is required, that’s where you will find a Reflex pressure-maintaining system. As the market leader, Reflex covers a wide range of potential application areas: from a domestic solar system, via direct installation of boilers, to potable water supply in residential complexes.
Dynamic pressure-maintaining systems
- Automatic and monitored operation
- Space-saving by reducing the volume of the vessel
- Reliable pressure maintenance
Reliable pressure maintenance for every requirement
With our broad portfolio of pressure maintenance stations, we enable automated and precise pressure maintenance in systems with a wide range of requirements.
Dynamic pressure maintenance stations are a further development of conventional diaphragm expansion vessels with static gas pressure. The principle differs through the additional use of a control unit, which allows the volume in a connected vessel to be adjusted and used as required.
Reflex offers the compressor-controlled Reflexomat or the pump-controlled Variomat pressure maintenance station. The Reflexomat controls pressure compensation using a compressor, while the Variomat does so using a pump. The Variomat also features integrated degassing. Both product groups are available in numerous sizes and, on request, as individually manufactured solutions.
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Range brochure
Pressure maintenance stations
With our broad range of pressure maintenance stations, we can create automatic and precise pressure maintenance in systems with an extremely wide range of demands.