Hebei Jinghangyu Valve Manufacturing Co.,Ltd

What Does Gate Valve Mean? A gate valve has a flat closure element that slides into the flow stream to stop the fluid. They are one of the most commonly used valves, and are primarily used to permit or prevent the flow of liquids. Gate valves  can be used in demanding environments such as high-temperature and high-pressure environments. They are often used in: ● Power plants ● Water treatment ● Mining ● Offshore applications Gate valves are also known as knife valves, slide valves, sluice valves or linear motion valves.     What is the function of gate valves on ships? Gate valves are used in applications where a full unrestricted flow of the fluid is desired. As the gate can be opened to the full bore it provides very less frictional loss. Gate valves  are not suited for regulating flow as the gate arrangement allows the valve to remain in either fully closed or open position. In order to increase tightness of the seal some gate valves are provided with twin discs which can be pressed

Gate valves   are primarily designed to serve as isolation valves. In service, these valves generally are either fully open or fully closed. When fully open, the fluid or gas flows through the valve in a straight line with very little resistance. Gate valves should not be used in the regulation or throttling of flow because accurate control is not possible. Furthermore, high-flow velocity in partially opened valves may cause erosion of the discs and seating surfaces. Vibration may also result in chattering of the partially opened valve disc. An exception to the above are   specially designed gate valves   that are used for low-velocity throttling; for example, guillotine gate valves for pulp stock.     Advantages of Gate Valves  1. They have good shutoff characteristics. 2. They are bidirectional. 3. The pressure loss through the valve is minimal.   Disadvantages of Gate Valves The following are some of the disadvantages of gate valves that must be considered when selecting a gate valv