Flange type butterfly valve
A flanged and butterfly valve technology, applied in the field of flanged butterfly valves, can solve the problems of the relative rotation of the valve stem and the butterfly plate, the loose connection between the valve stem and the butterfly plate, shortening the service life of the product, etc., and achieves good bidirectional sealing effect and operation. Reliable, reliability-enhancing effects
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0020] Refer as follows Figure 1-4 The present invention is described:
[0021] A flanged butterfly valve, including a valve body 1, a valve stem 2, and a butterfly plate 3, the valve body 1 includes an upper valve body 101 and a lower valve body 102, the upper valve body 101 and the lower valve body 102 The valve body 1 is provided with a valve seat 4, and the inner surface of the valve seat 4 is provided with a fluorine-lined layer 5, and the butterfly plate 3 ...
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