The Zilmet Hy-Pro solar vessels use the Zilan E solar membrane which is a 'bag' design and secured by a steel sealing plate.
The vessels are designed for system temperatures reaching 110°C, and peaks of 130°C.
Expansion vessels should always be located on the cool side of the system and as far from the collector as possible. To this extent connectpoints are located on the solar pump station. If the vessel can only be located in an extreme temperature location, then Intaeco and Zilmetrecommend the addition of a VSG intermediate heat dissipation vessel to the expansion vessel installation.
Zilmet solar vessels are suitable for use in glycol based fluid systems with a mix ratio up to 50.VSG Intermediate Vessels:
These tanks are equipped with entry and exit valves and are placed before the solar expansion tank. This tank provides heat dispersion byreducing the working temperature and therefore greatly increasing the life of the tank.