Overflowing protective valve

The utility model discloses an overflowing protective valve, including the valve body base, the inside valve pocket that forms of valve body base be provided with the disk seat bottom the valve pocket the valve pocket inside in disk seat top be provided with the tubbiness case of taking the valve rod, in the case top is provided with cyclic annular gland, the outer anchor ring of gland with anchor ring interference fit in the valve body base, case upper portion side is provided with a plurality of minutes discharge orifices, the case can be followed valve body inner wall of the base upwards slides and makes the case top with the gland cooperation stops the liquid circulation, and the lapse makes case bottom with disk seat terminal surface cooperation, liquid by the flow channel process the case inner chamber with divide the discharge orifice so that by the circulation of gland inner chamber current -limiting. The utility model discloses gland and valve body base adopt interference fit, and compact structure,