The vent valve is normally used to allow air entry inside the tank and to help the regulatation of the tank atmosphere. The structure of the vent and a screen inside it protect the pipework from dirty, insects or other particles avoiding vent line obstruction.
It’s an accessory according with Directive 2014/34/EU and harmonized standard.
The vent valves are available in the materials:
- stainless stell
- carbon steel
diameter:
4" and 6"