Fixed ball valve, valve sealing structure and valve packing
A ball valve and sealing surface technology, applied in the field of fixed ball valves, can solve problems such as difficulty in ensuring tightness, large insertion force, and increased number of parts, and achieve the effects of preventing fluid leakage, improving tightness, and maintaining tightness
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[0050] Hereinafter, embodiments of a fixed ball valve, a valve sealing structure, and a valve packing according to the present invention will be described based on the drawings. exist figure 1 The first embodiment of the fixed ball valve of the present invention is shown in figure 2 (a) means figure 1 An enlarged sectional view of part A.
[0051] figure 1 , figure 2 The fixed ball valve (hereinafter referred to as the valve main body 1) of (a) has a valve body 2, a ball 3, an upper valve stem 4, a lower valve stem 5, a ball seat 6, a packing body 7, and a pushing mechanism 8, and is particularly suitable for For use with high-pressure and high-temperature fluids. Specifically, for example, it is suitable for the use range of the highest working pressure: 10~25MPa, working temperature: -40°C~535°C, the valve main body 1 of this embodiment is assumed to have a working pressure of 10MPa, a working temperature of 400°C, and a nominal pressure of 600 pounds ( 10MPa), si...
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