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Due to the relatively large variety of valves used in the marine's pipelines, this creates difficulties in preparing and revising the appropriate standards for valves. Another aspect is that the use of valves in current marine pipelines in China is mainly based on manual valves such as a globe valve and gate valve. Such industrial valves are still relatively insufficient in terms of weight, volume, and sealing.
The industrial valves are in the fluid system. The device used to control the direction, pressure, and flow of the fluid is the device that allows the flow and stops of the medium (liquid, gas, powder) in the pipe and equipment and can control its flow. The valve is the fluid delivery system.
Gate valves can be divided into parallel gate valves, wedge gate valves, lift gate valves, rotary lever gate valves, quick opening and closing gate valves, shrink gate valves, and slab gate valves according to different classification methods.
The rubber elastomer in the butterfly valve may cause tearing, abrasion, aging, perforation or even falling off during continuous use. The traditional thermal vulcanization process is difficult to adapt to the needs of on-site repair valves.