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This post was last edited by leo_0088 on 2017-10-3 09:32. Gate valves derive their name from their mechanism for shutting off fluids. The function of a gate valve is similar to that of sliding windows that separate the inside from the outside in a home, or sliding doors that divide rooms. 2) The disc-shaped valve plate (valve core) installed inside the valve body moves vertically up and down relative to the pipeline and fluid to open and close. It is a design that utilizes the wedge-shaped structure of the valve plate to prevent fluid flow. http://www.tozenv.com/UploadFile/2017926233623165.gif 3) When the handwheel is rotated to the left, the valve plate moves upward, allowing the flow path to be open; conversely, when the handwheel is rotated to the right, the valve plate moves downward, causing the flow path to gradually close. Globe valves are suitable for this type of on/off operation. http://www.tozenv.com/UploadFile/2017926233259916.swf (II) Installation and maintenance of gate valves: (1) Compare the rated parameters required by the equipment with those indicated on the product to ensure that the product meets the requirements of the application ； (2) The installers must be trained and experienced to ensure the successful completion of the installation work ； (3) A thorough inspection must be carried out after installation is complete to ensure it was done correctly ； (4) To ensure that no accidents occur during installation, the piping system must be thoroughly cleaned before the product is installed (using chemical agents if necessary) to guarantee that it is clean, free from rust and dirt. All filtering devices must be removed before flushing to ensure smooth flow in the pipes ； (5) It is recommended to install temporary pipes at the locations where the equipment will be connected to the pipes during the initial cleaning of the system; the equipment can then be installed on those pipes once the flushing process is complete ； (6) Be careful not to use this device in areas where the medium contains a high amount of grease, mineral oil, or other substances with high viscosity or corrosive properties ； (7) Fix using standard flanges and corresponding bolts ； External links are not allowed; WeChat messages are required!