Gate Valves are designed to serve as isolation valves. These valves help to control the flow of liquid through the pipes. To start or stop the water flow or any other kind of liquid, these valves are affixed to the pipelines. Gate valves are used for various purposes and they can be seen commonly in homes and commercial centers. Different materials such as stainless steel, cast iron, alloy steel, forged steel etc are used to manufacture these valves.