Flange ventilation with one sphere
![zracnik_na_eno_kroglo zracnik_na_eno_kroglo](https://akvapam.mk/wp-content/uploads/2019/03/zracnik_na_eno_kroglo.jpg)
One-ball air valve ensures uninterrupted operation of the pipeline, allowing the outlet or air inlet to be filled into the pipework when charging and discharging. The valve automatically operates on the principle of linear balloon and the difference in pressure in the pipeline and the atmosphere. It is installed at the highest spots for breaking the pipeline. P>