Ball valve with scour-prevention valve base
An anti-scouring and valve seat technology, which is applied to valve devices, cocks including cut-off devices, engine components, etc., can solve problems such as short service life, damage to valve seats, and valve seat detachment, so as to achieve simple use and prolong service life , High reliability effect
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[0024] according to figure 1 It can be seen that this kind of valve seat anti-scouring ball valve includes: valve body 1, ball 2, valve seat 3, packing 13, gland 14, connecting bracket 15 and upper valve stem 12, and the upper end of the middle part of valve body 1 is provided with a connecting flange and the packing tank, the packing 13 is fixedly installed at the packing tank by the gland 14, the connecting bracket 15 is installed at the connecting flange through standard fasteners, the upper end of the upper valve stem 12 is provided with a keyway connected with the external driving device, and the upper valve The lower end of the rod 12 passes through the packing groove and extends into the inner cavity of the valve body 1 to connect with the sphere 2. The sphere 2 is placed in the inner cavity of the valve body 1. The outer surface of the sphere 2 has a spherical surface structure. The valve seat 3 is made of non-metallic plastic material and is vertically arranged in the...
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