It is also known As ARV, it’s a multi-function valve whose initial function is to ensure the pre-determined minimum flow through a centrifugal pipe all the time. It plays a vital role here as centrifugal pumps suffer from heating problems and if ARV is not available it can permanently damage the pipe of it dry out.
The Automatic recirculation Valves are ideal designs for the purpose of protecting pumps. They come in ahuge variety and are found In most industries.
There are three main conditions in order of working of an ARV.
-Main flow only, bypass closed
-the combined flow
-No main flow, only bypass