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Showing posts from November, 2021

How to distinguish between wedge gate valve and parallel gate valve

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  Gate Valve The internal structure of the wedge type and the parallel type is different. The wedge type means that the structure is a wedge type, that is, an oblique sealing structure. The parallel type is called a flat gate valve. Its characteristic gate is vertical, and there is a diversion hole in the middle of the gate. The switch is very portable, the pipe and the diameter are full diameter, so it is called the parallel type. From the appearance point of view, the parallel gate valve is shorter than the wedge gate valve, but the height is longer. There is a long dust cover on the parallel handwheel, which plays a role of dust blocking and indicating. There is no wedge. The sealing surface of the wedge gate valve is at a certain angle with the pipeline axis, that is, the two sealing surfaces are wedge-shaped gate valves. The size of the wedge's frequency slope angle mainly depends on the temperature of the medium. Generally, the higher the working temperature, the larger the a

Wedge Gate Valve and Parallel Gate Valve

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As a  gate valves supplier , I'd like to share it with you. There are many types of gate valves, both in terms of structure or internal sealing, which also means that the difference in gate valve structure is also different in the application. What are the differences between our common wedge gate valves and parallel gate valves, and what are their characteristics? How to distinguish between wedge gate valves and parallel gate valves? Next, let’s carefully compare the wedge gate valves and parallel gate valves. To understand the difference structure and application of the gate width.   Gate Valve

Centerline Butterfly And Eccentric Butterfly Valve

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The rotation center of the butterfly plate and the sealing position of the valve seat form two eccentric distances, which ensure that the butterfly plate is quickly separated from the valve seat during the switch rotation process, so that there is no contact between the butterfly valve and the seal during the working process, which reduces Wear and tear, and more importantly, our G-type valve seat applies the patented technology of Handa (HD). Through a large number of calculations, trial and error, and actual measurement in domestic applications, it has proved that the high-performance butterfly valve has "zero leakage and 100% leakage". The effect of “ten thousand times service life”, our G-type sealing valve seat, from the cross-sectional view, we can see that the contact shape between the butterfly plate of our butterfly valve and the sealing surface of the valve seat is like a simply supported beam structure, when the butterfly plate squeezes towards When the sealing sur
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Midline (concentric) The structural characteristics of the midline Centerline (concentric) The structural feature of the centerline is that the shaft center of the valve stem , the center of the gate, and the center of the body are in the same position. The structure is simple and the manufacturing is convenient. Common rubber linings belong to this category. The disadvantage is that the gate and the valve seat are always in a state of squeezing and scratching, large resistance distance, and fast wear. In order to overcome squeezing, scratching, and to ensure the sealing performance, the valve seat is basically made of elastic materials such as rubber, but the sealing material is also limited by temperature in use, which is why people traditionally think that it is not resistant to high temperatures. Applicable to the pipelines of petroleum, chemical, food, medicine, paper, water and electricity, ships, water supply, drainage, smelting and energy, etc., and can be used in a variety of