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 gas cushion forces water back into the system. This permits to keep the system pressure stable.
The wide range of Zilmet expansion vessels and sanitary tanks, together with their many shapes and dimensions permit various solutions and fit into
the newest and latest-design boilers.
Headquarters
Via del Santo, 242 - 35010 Limena (PD) - Italy
Tel. +39 049 7664901 • Fax +39 049 767321
www.zilmet.com
zilmet@zilmet.it
Production plants - Italy
Limena (PD) Via del Santo, 242
Via Visco, 2 • Via Colpi, 30
Via Tamburin, 15/17
Bagnoli di Sopra (PD) - Via V Strada, 21/23
Branches
Zilmet DE
Zilmet USA
Zilmet UK
Zilmet CN
www.zilmet.de
www.zilmetusa.com
www.zilmet.co.uk
www.zilmet-china.com
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