There are many forms of valve connection
There are many forms of valve connection, for example, some small valves that do not need to be removed are welded with the pipe; some non-metallic valves are connected by socket and socket, and so on. Valve users should be treated according to the specific situation.
All the above connection forms use external force to offset the medium pressure to achieve sealing. The following describes the self-tightening connection form using medium pressure. Its sealing ring is installed at the inner cone and forms a certain angle with the side facing the medium. The pressure of the medium is transmitted to the inner cone and then to the sealing ring. On the cone surface of a certain angle, two component forces are generated, one with The center line of the valve body is parallel to the outside, and the other is pressed against the inner wall of the valve body. The latter force is the self-tightening force. The greater the medium pressure, the greater the self-tightening force. Therefore, this connection form is suitable for high pressure valves. Compared with flange connection, it saves a lot of material and manpower, but it also requires a certain preload, so that it can be used reliably when the pressure in the valve is not high. Valves made using the principle of self-tightening sealing are generally high-pressure valves.
There are valves and pipe fittings, which are all used in pipeline connection or control systems. Valves and pipe fittings cannot exist independently and complement each other. Valve fittings are made of carbon steel and stainless steel, as well as PVC, or other materials. The first two are commonly used. In recent years, with the improvement of people’s living standards, the demand for non-staple food has also been large. up. Therefore, the rapid development of food machinery has been driven, so the production of stainless steel sanitary valve and pipe fittings is booming. People usually say that valve pipe fittings are mostly used stainless steel sanitary grade.