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Zilmet Cal Pro Expansion Vessel for Heating Systems - 400 Litre
Zilmet Cal Pro Expansion Vessel for Heating Systems - 400 Litre

Zilmet Cal Pro Expansion Vessel for Heating Systems - 400 Litre

Your Price: £940.87
Part Number:CAL-PRO 400
Advantages
The CAL-PRO expansion vessels absorb the water volume variations in closed heating systems maintaining constant pressure and help to reduce energy consumption. The broad range available meets the requirements of various heating system sizes.

Technical features
Crimped or welded carbon steel shells, synthetic SBR rubber according to DIN 4807-3 norms are suitable to every capacity for maximizing tank draw down. Vessels are painted externally with long-lasting epoxy-polyester powder coating and are 100% factory-tested.

Working
In a closed heating system water cannot be compressed and any increase in water volume due to the increase of its temperature is absorbed by the expansion vessel. When water is cold, the precharge pressure of the tank presses the diaphragm against the tank. As temperature increases, the expanded water volume pushes against the membrane and water enters the tank, providing additional space to the system. With the temperature decrease, the air cushion forces water back into the system. This permits the system to maintain the pressure, helping to reduce energy consumption of the heating system.