Extended Stem Knife Gate Valve Video

This is a very simple animated illustration on the basics of hydraulic schematic symbols. In this topic we are talking about how the hydraulic schematic symbol for control valve is derived. Here we have taken the example of a three position four ports valve and explained with the help of an animation. In this animation you can clearly learn how we name the positions of the control valves and the ports in the schematic representation and will help you to read any type of control valves.