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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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1. Surface condition of sealing surface The shape and surface roughness of the valve sealing surface have a certain impact on sealing performance, and a smooth surface is beneficial for sealing. Soft gaskets are prone to deformation and are not sensitive to surface conditions. For hard gaskets, the surface condition has a significant impact. 2. Contact width of sealing surface The larger the conta...
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There are some differences in the structure and working principles between the angle-type bellows sealed globe valve and the bellows globe valve, primarily evident in the following aspects: Structural Design Bellows Globe Valve: Primarily utilizes bellows as the sealing element, a flexible metal conduit capable of adapting to the bending and expansion of pipelines to ensure the valve's sealing per...
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The sealing surface of the valve is often corroded, eroded, and worn by the medium, making it a vulnerable component of the valve. For example, automatic valves such as pneumatic ball valves and electric butterfly valves have frequent opening and closing and fast opening and closing speeds, and their quality directly affects the service life of the valve. The basic requirement for valve sealing su...
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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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