It is well known that water can not be compressed

Taking that as a princible, the volume of the system's water increases along with the temperature increase in the closed circuit heating&cooling systems. As the increasing water volume can not be compressed, the excess of the water has to be compansated into the closed curcuit system. For this reason, the most common way to compensate the excess the water is to add an expansion tank to the system.

When comparing, EDS Gobal heating series expansions vessels in use at closed circuit system to open circuit systems, the expansions vessels provide great advantages to the system:

■  The outside going water has to be added back into the system each time in the open circuit systems.
■  Corrosion is quite possible in open circuit systems because of the oxygen penetrating into the  system.
■  The installation of the expansion vessels is much easier than the open circuit systems

SPESIFICATINS 

Tank Metal Body
■  Changeable membrane with a screw connection flange cover 
■  Flange connection made of galvanized carbon steel material
■  Resistant up to 8/10/16/25 bars
■  Outer surface with double layer Epoxy primary & Polyurethane Acrylic paint 

Membranes
■High quality membranes according to European Standarts
■Suitable for use -20°C/ +100°C working temperature
■Suitable for use with Ethylene-or Propylene-Glycolic mixtures
■DIN 4807-3, NSF-61, WRAS, BS-6920 certified andother quality certificates available 
 

Option : Butly membranes available upon request 

Colour: Original Colour; Red-RAL3020