Assembling method of scraper stop valve
An assembly method and globe valve technology, applied in valve devices, lift valves, engine components, etc., can solve the problems such as the inability of the sealing surface of the valve disc and the sealing surface of the valve seat to be tightly combined, the easy damage to the sealing pair, and the short service life. To achieve the effect of good sealing, enhanced valve life and long service life
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[0028] according to figure 1 , figure 2 and image 3It can be seen that a cut-off valve with a scraper in the present invention includes: a valve body 1, a valve seat 2, an outer valve stem 7, a valve disc 5 and a valve cover 9, and the valve body 1 is provided with an inlet flow channel, an outlet flow channel and a middle cavity. The outlet channel communicates with the middle cavity, the valve seat 2 is set at the outlet end of the inlet channel, the upper end of the valve seat 2 is provided with a valve seat sealing surface, the valve seat 2 is provided with an inner cavity, and the valve cover 9 is fixedly installed on the upper end of the middle part of the valve body 1, The middle part of the bonnet 9 is provided with a stuffing box, and a packing 10 and a packing gland 11 are installed at the stuffing box. The packing gland 11 presses the packing 10 downwards. There is a groove, and a valve stem nut 15 and a limit sleeve 13 are arranged at the groove, and the limit ...
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