A gate valve has a round knob on top that you turn. This motion raises or lowers a gate inside of the housing to stop or start the flow of water. These valves are prone to failure as they age ...

Article citations More>> Yamada, H., Nakahara, Y. and Tsuchiya, T. (2015) Flow Field through a Gate Valve Installed in a Circular Pipe and Loss Coefficient. The Japan Society of Mechanical Engineers, ...