Pneumatic abrasion-resisting angle stop valve

The invention relates to a pneumatic abrasion-resisting angle stop valve which is small in size, light in weight, flexible to open, good in seal performance, resistant to abrasion and impact, easy to install, low in production cost and suitable for cutting off dust and ash dregs. The pneumatic abrasion-resisting angle stop valve comprises a valve body, a valve body sleeve, a valve base, a valve cover and a valve body neck bush, a valve rod, a valve clack sleeve and a valve clack are installed in the valve body, and a packing pad and a packing ring are arranged between the upper portion of the valve cover and the valve rod from bottom to top. The pneumatic abrasion-resisting angle stop valve is characterized in that a screw hole is formed in the valve cover, a round nut used for clamping a pneumatic device is installed at the upper end of the valve rod, the valve clack and the valve base are made of tungsten and cobalt hard alloy, the sealing face of the valve base and the valve clack is a conical face, the valve clack sleeve and the valve clack are connected through a spherical surface antifriction bearing, the lower end of the valve rod and the valve clack sleeve are connected in a conical face mode to achieve automatic centering, the lower end face of the valve rod is a spherical surface and makes contact with the upper end face of the valve clack for automatic center adjustment, and a lower end opening of a center through hole of the valve cover is a conical face to form an upper sealing point.