Safety valve 8115 2.5 bar 1/2 inch, solar 8115.15.150

Protection of solar systems against overpressure

Membrane safety valve 8115.15.150 acts as an automatic protective element in installations with solar collectors, stopping pressure rise above 2.5 bar. It is designed for use with liquids – including water‑glycol mixtures, where glycol content does not exceed 50%. It is not suitable for aggressive media nor for steam at temperatures above 160 °C.

For the installer – simple installation and clear compliance with practice

It is installed vertically, with a G 1/2" (DN15) connection, which matches standard pipe sizes in solar systems. Roughly, this model is sufficient to protect collectors with an area up to 50 m² – which corresponds to the typical range for single‑family home installations. Note: this is not a technical parameter but a practical guideline – the actual requirement depends on collector power, pipe length, and the nature of the thermal load.

For the user – safe and reliable protection

The valve requires no maintenance or adjustment. If system pressure exceeds 2.5 bar, it opens automatically and discharges the excess medium. When pressure drops, it closes automatically. There are no moving parts such as a screw valve – the membrane is the only element responding to pressure changes, reducing the risk of blockage or malfunction. High operating temperature (up to 160 °C) ensures the valve will not be damaged even if the system overheats in summer conditions.