Expansion Tanks – Essential in Every Central Heating System
An expansion tank is an indispensable component of every central heating system, responsible for stabilizing the pressure in the installation. In the Dambat range, under the IBO, IBO Italy, and IPRO brands, you will find a wide selection of expansion tanks for boilers that can be used in both closed and open systems. Depending on your needs, you can choose a central heating expansion tank with a capacity ranging from 5l to more than 2000l.
Central Heating Expansion Tank – How Does It Work?
An expansion tank for central heating compensates for changes in water volume caused by heating and cooling. Without one, the system could experience an uncontrolled increase in pressure and failure. These tanks may have a diaphragm design or a traditional steel design, known as an overflow tank. Dambat mainly offers modern diaphragm tanks that are sealed, safe, and suitable for systems containing heating water or domestic hot water.
How to Choose an Expansion Tank?
Choosing the right expansion tank depends on many factors: the type of system (closed or open), its volume, operating temperature, and the type of heating medium. The most popular capacities include a 10l central heating expansion tank, a 20l central heating expansion tank, and a 30l central heating expansion tank, but larger buildings require tanks with a much greater capacity. A properly selected central heating expansion tank ensures trouble-free system operation for many years.
Types of Expansion Tanks Available from Dambat
Our range includes:
- Closed diaphragm expansion tanks for central heating,
- Diaphragm expansion tanks for domestic hot water,
- Galvanized tanks without a membrane,
- 5l expansion tanks for smaller systems,
- as well as accessory sets: diaphragms, flanges, and mounting brackets.
Every expansion tank for central heating available from Dambat is made from durable materials and meets European safety standards. Whether you are looking for an expansion tank for a gas, pellet, or oil boiler, we have the right model for you.
Frequently Asked Questions (FAQ)
What is the difference between a closed central heating expansion tank and an overflow tank?
A closed central heating expansion tank operates under pressure and is fully sealed, whereas an overflow tank is open and allows the water to expand freely. The former is used in modern systems, while the latter is used in older gravity-fed installations.
How do you choose the capacity of an expansion tank?
The tank is usually selected to equal 8–10% of the total system volume. For small systems, a 10l central heating expansion tank is sufficient; for medium-sized systems, choose a 20l or 30l central heating expansion tank. For larger systems, it is advisable to consult a specialist.
Can an expansion tank be used in a domestic hot water system?
Yes, expansion tanks are also used in domestic hot water systems, particularly with water heaters featuring a built-in narrow return pipe. Dambat offers models designed for domestic hot water systems, with a suitable diaphragm and a durable internal coating.
Can the diaphragm in a tank be replaced separately?
Yes, the diaphragm in a diaphragm tank is replaceable. The IBO range also includes flanges and seals, allowing you to service the tank yourself without replacing it.
This description is for informational purposes only. Before purchasing, select a device appropriate for the technical conditions of the system. All trade names belong to their respective owners.
