Analysis of the internal structure of antibiotic stop valves

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The appearance of an antibiotic stop valve is the same as that of a regular stop valve; the difference lies mainly in its internal structure. Today, we will show you its internal components through pictures. There are three types of PTFE gaskets used to secure the sealing surface of antibiotic stop valves: (the diagram below shows the second type). The first type involves drilling a thread on the valve disc, after which a bolt and gasket are used to secure it in place. The second method involves directly machining a threaded screw using a valve disc, and then securing it with shims and hex nuts. The third method involves drilling a hole in the valve disc, welding a screw in place, and then securing it with a gasket and a hex nut. http://www.xyzhf.com/uploadfile/2015/0826/20150826092520457.jpg http://www.xyzhf.com/uploadfile/2015/0826/20150826092617174.jpg http://www.xyzhf.com/uploadfile/2015/0826/20150826092313830.jpg There are two ways to connect the valve disc to the PTFE gasket: (the first method is shown below.) 1. The outer diameter of the flat PTFE gasket is the same as that of the valve disc. 2. The outer diameter of the concave PTFE gasket is 2–5 mm smaller, while the outer diameter of the valve disc is 2–5 mm larger; this varies depending on the size of the valve. This type is called a ladle gasket, with a stainless steel outer layer and a PTFE gasket inside. http://www.xyzhf.com/uploadfile/2015/0826/20150826092740626.jpg http://www.xyzhf.com/uploadfile/2015/0826/20150826092430982.jpg