Low-temperature plug valve
A plug valve, low temperature technology, applied in the field of plug valves, can solve the problems of unqualified materials, external leakage or internal leakage of the shell and sealing surface, and can not meet the requirements of use, and achieves strength and rigidity. Effect
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[0022] The present invention will be further described in detail below with reference to the drawings and specific embodiments.
[0023] Such as figure 1 As shown, the embodiment of the present invention includes valve body 1, cock 2, cock sleeve 3, valve body bushing 4, spiral wound gasket 5, diaphragm 6, spiral wound gasket 7, stuffing box 8, valve cover 9, O-ring 10. , Stud 11, nut 12, anti-static spring 14, steel ball 15, circlip 16, fixed block 17, positioning piece 18, handle seat 19, handle 20, lock 21.
[0024] Specifically, such as figure 1 , Figure 2-Figure 4 The valve body 1 includes a cavity 100 in the central area and a passage 102 for passing the medium. The side wall of the cavity 100 is provided with an annular groove 101, and the annular groove 101 is embedded with a valve body bushing 4. And the material of valve body 1 is LCB (LCB cast steel grade, a kind of low temperature carbon steel of American Standard), LC3 (Al-Zn-Mg-Cu, super hard aluminum alloy), CF8 (Am...
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