The surplus air inside a pipe can impede the fluid movement. Hence, the air in pipe result in slower circulation, turbulence, and corrosion. In order to avoid all theses troubles air valve is fitted inside the pipe to vent the surplus air. The stream coefficient, Cv, is utilized as a https://radiator-repair42951.blogdosaga.com/27189035/not-known-facts-about-types-of-air-valves