Control of air in water systems is as essential as control of water. The major benefits of using air valves are increased system efficiency and shorten filling time, saving of energy as well as protection from vacuum conditions and pipe collapse. The air valves control the air in each of the following stages:
Pipeline filling
To allow efficient filling, air has to be relieved or evacuated. In case the air is not being effectively relieved, the pipeline filling time will increase significantly. A large volume of air, which was not relieved during pipeline filling, might lead to pressure surges….