Automatic current-limiting waterstop valve

The utility model discloses an automatic current-limiting water stop valve which comprises a valve casing, a valve body, a valve, a valve rod and a handle, wherein the valve body is sealed with a taper surface of the valve. The utility model is characterized in that an elastic device is installed between the valve body and the valve, the valve body is connected with the valve rod in an up and down sliding mode through a guide positioning device. The valve body is provided with pressure compensation pinholes. The elastic device can adopt a compressing spring mechanism and the guide positioning device is connected with a guide casing tube at the rear end of the valve body, and the valve rod is inserted in a guide hole of the guide casing tube. A convex loop is installed at the front end of the valve rod and the convex loop is used to control the position of the guide casing tube. The utility model can automatically limit the flow rate of the water in the water supply pipeline and can automatically close the pipeline when the lower reach water supply pipeline is broken.