Air venting valves should be installed on the highest point on a pipe line in order to utilize the capacity of the flow. It prevents air pockets from accumulating, which impedes the flow in the system.
Air venting valves can have a 1-way function, which evacuates air during pumping. There are also air relief valves with a 2-way function, which have the 1-way function plus that it can also evacuate air when emptying or refilling a pipe line. Air venting valves are available for both clean water and waste water.
