Analysis of fluorine-lined ball valve manufacturers: fluorine-lined ball valve and fluorine-lined globe valve
are our most commonly used valves. Below we analyze the difference between them from their definition, principle, and application. 1. Different definitions: 1. Globe valve, also known as cut-off valve, is a mandatory sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. 2. The ball valve is a valve in which the opening and closing parts (balls) are driven by the valve stem and rotate around the axis of the ball valve. 2. Different working principles: 1. When the medium of the globe valve enters the valve from the bottom of the valve disc, the resistance that the operating force needs to overcome is the friction force of the valve stem and the packing and the thrust generated by the pressure of the medium, and the force to close the valve It is larger than the force to open the valve, so the diameter of the valve stem should be larger, otherwise the failure of the top of the valve stem will occur. 2. Ball valves can be used for fluid regulation and control. Among them, the hard-sealed V-shaped ball valve has a strong shear force between the V-shaped ball core and the metal valve seat of hard alloy surfacing, which is especially suitable for fibers and tiny solids. particles, etc. The multi-port ball valve on the pipeline can not only flexibly control the confluence, diversion, and switching of the flow direction of the medium, but also can close any channel and connect the other two channels. This type of valve should generally be installed horizontally in the pipeline. 3. Different scope of application: 1. As one of the important shut-off valves, the globe valve plays an important role in the aerospace field. As an important component of aerospace equipment, globe valve realizes the functions of medium conveying, cutoff and adjustment, and its sealing performance directly affects the safe and reliable operation of aerospace equipment. The study of the influencing factors and influence rules of the sealing characteristics of typical globe valves has guiding significance for the structural design of the valve sealing pair, thereby improving the sealing performance and reliability of the valve. 2. Ball valves are widely used in petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmaceuticals, water conservancy, electric power, municipal administration, steel and other industries, and occupy a pivotal position in the national economy. It has the action of rotating 90 degrees, and the cock body is a sphere with a circular through hole or channel passing through its axis.
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