Solar collector system temperatures, when idle, reach up to 392°F. Consequently, the fluid can evaporate and may reach the solar station at dangerously high temperatures. This can create irreparable damage to the pumps, fittings, gaskets and, above all, the tank membrane, the heart of the system.
The SOLARPLUS expansion tank is completely welded, making it particularly reliable at 150psi. It is also designed for rapid installation in all types of solar energy systems.
ZILMET created the membrane, the product of our research and development and decades of experience in installing ZILMET expansion tanks in solar collector systems. Our tanks are
Liquids reaching 212°F
Various mixtures of ethylene or propylene glycol
Considering it is a diaphragm membrane, the liquid is in contact with the walls of the tank, therefore cooling down and reducing any negative effects on the membrane.
This design avoids the “thermos effect”, which happens in bag membrane tanks. Zilmet developed the
membrane for SOLARPLUS expansion tanks. , a high-temperature membrane, resists up to 212 F°.
Thanks to the synthetic rubber membrane is resistant to 212 °F and various mixtures of ethylene or propylene glycol. , a proprietary ingredient of synthetic rubber membrane was specifically designed for SOLARPLUS expansion tanks.
The SOLARPLUS tank design gives you a long lasting tank with excellent safety features.
A high value vertical tank with a bottom flange, which makes it possible to replace the membrane when necessary. It’s maximum working pressure reaches 150psi.
This is our standard line of solar collector expansion tanks that include lower temperature and pressure sizes. The SOLARFLEX expansion tanks have a diaphragm membrane that is resistant to temperatures up to 158°F.
Ask for our complete set of accessories that go from quick release mechanisms to fittings that will make an expansion tank pressure check as fast and easy as can be. Our accessories will make tank maintenance a question of only a few minutes.