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There are many types of valves, each with its own advantages and disadvantages. Below are the advantages and disadvantages of five major valves, including gate valves, butterfly valves, ball valves, globe valves, and plug valves. 1. Gate valve Gate valve refers to a valve where the closing element (gate) moves vertically along the channel axis. 1.1 Advantages ① Low fluid resistance, small torque r...
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Working principle of globe valves Assuming there is a water supply pipeline with a cover, water is injected from the bottom of the pipeline and discharged towards the direction of the pipe mouth, and the cover of the outlet pipe mouth is equivalent to the closing part of the globe valve. If you lift the pipe cover up with your hand, the water will be discharged outward. If you cover the pipe cover...
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(1) Selection principle of valves for water supply pipelines 1. When the diameter of the pipeline is less than 50mm, a globe valve should be used; When the pipeline diameter is greater than 50mm, gate or butterfly valves should be used; 2. When it is necessary to adjust the flow and water pressure, regulating valves and globe valves should be used; 3. For parts with low water flow resistance (such...
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304 austenitic stainless steel (new standard 06Cr19Ni10 steel, old standard 0Cr18Ni9 steel) is widely used in industries such as petrochemical, metallurgical machinery, aerospace, food processing, instruments, household appliances, and hardware manufacturing due to its good toughness, plasticity, weld-ability, corrosion resistance, and non-magnetism at room and low temperatures. The reason why 304...
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At present, the commonly used hardening processes for the surface of metal hard sealed ball valves mainly include the following: (1) The surface of the sphere is welded (or sprayed) with hard alloy, with a hardness of over 40HRC. The process of surfacing hard alloy on the surface of the sphere is complex, with low production efficiency, and large-scale surfacing can easily cause deformation of the...
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With the rapid development of science and technology, the continuous improvement of production processes and product structures, ball valves have been increasingly applied in thermal systems in recent years. It has the advantages of no fluid resistance, light weight, zero leakage sealing performance, fast opening and closing switch, no medium erosion on the sealing surface, and long service life. ...
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