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Stainless steel gate valve is a device used to control the direction, pressure and flow of fluid in the fluid system. The material of stainless steel gate valve is an alloy composed of iron, chromium, carbon and many different elements. Iron is the main component element, and chromium is the main alloying element. Generally speaking, the chromium content must account for at least 11% to be called ...
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With the rapid development of the economy and the increase of large-scale petrochemical engineering projects, more and more high-temperature hard-sealed ball valves are widely used in the fields of petroleum, chemical industry, steel, metallurgy and hydropower. Compared with soft-sealed ball valves, the sealing material and design structure of hard-sealed ball valves are better suitable for high-t...
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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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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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Structurally Gate valves can rely on medium pressure to tightly close the sealing surface, thereby achieving the effect of no leakage. When opening and closing, the sealing surface of the valve core and valve seat always come into contact and rub against each other, so the sealing surface is prone to wear. When the gate valve is close, the pressure difference between the front and back of the pipe...
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Buried soft-seated gate valves and conventional soft-seated gate valves are both common types of valves in pipeline systems, with significant differences in design, structure, and application. This article will delve into the differences between these two types of valves and provide a detailed comparison of their features. Structure Design 1. Installation location Conventional soft-seated gate val...
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