Gate Valves is another member of shut off/on valve family. What makes this unique is its disc movement is linear. The disc is either gate or wedge-shaped, which has an effective shut-off and on mechanism. Gate valve is primarily suited for isolation. While it is possible to use it as a throttling valve, this is not advisable as the disc may get damaged by media vibration. The surge of the media can damage the disc when gate valves are used half-closed in a throttling application.