How To Understand The Use And Introduction Of Stainless Steel Gate Valves
Stainless Gate Valve is a valve that uses a disc-type opening and closing piece to repeatedly rotate about 90° to open, close or adjust the flow of the medium. The butterfly valve is not only simple in structure, small in size, easy to operate, small in size and driving torque, but also has excellent flow regulation function and closed sealing characteristics. It is one of the fastest-growing valve types in the past decade. The application of butterfly valves is very extensive. The types and quantities of its applications are still expanding, and they are developing towards high temperature, high pressure, large diameter, high sealing, long life, excellent regulation characteristics, and one valve with multiple functions. Its reliability and other performance indicators have reached a high level.
With the use of chemically resistant synthetic rubber on butterfly valves, the performance of butterfly valves has been improved. Because synthetic rubber has the characteristics of corrosion resistance, erosion resistance, stable size, good resilience, easy forming, low cost, etc., and synthetic rubber with different functions can be selected according to different application requirements to meet the application conditions of butterfly valves.
Because polytetrafluoroethylene (PTFE) has strong corrosion resistance, stable function, not easy to age, low friction coefficient, easy to form, stable size, and can be filled and added with appropriate materials to improve its comprehensive function, so as to obtain butterfly valve sealing materials with better strength and lower friction coefficient, which overcomes the limitations of synthetic rubber. Therefore, high molecular polymer materials represented by polytetrafluoroethylene and its filling and modified materials have been widely used in butterfly valves, so that the function of butterfly valves has been further improved, and butterfly valves with wider temperature and pressure ranges, reliable sealing function and longer service life have been manufactured.
When the stainless steel butterfly valve is fully open, it has a small flow resistance. When it is opened between about 15°~70°, it can also perform sensitive flow control, so the use of butterfly valves is very common in the field of large-caliber regulation.
Because the movement of the butterfly valve disc is wiping, most butterfly valves can be used for media with suspended solid particles. According to the strength of the seal, it can also be used for powdery and granular media.
Butterfly valves are suitable for flow regulation. Because the pressure loss of butterfly valves in the pipe is relatively large, about three times that of gate valves, when selecting butterfly valves, the influence of pressure loss on the pipeline system should be fully considered, and the strength of the butterfly plate to withstand the pressure of the pipeline medium when closed should also be considered. In addition, the limitation of the working temperature of the elastic valve seat material under high temperature must also be considered.
The structural length and overall height of stainless steel butterfly valves are small, the opening and closing speeds are fast, and they have excellent fluid control characteristics. The structural principle of butterfly valves is most suitable for manufacturing large-diameter valves. When butterfly valves are required to control flow, the most important thing is to correctly select the standard and type of butterfly valves so that they can work properly and effectively.
