Patent ID: 7455071

Claim:
A hydraulic control valve for drip hoses, comprising a hose connector clamped at opposite ends thereof to an end of a branch hose and an end of a drip hose, respectively, and having a water supply path in the hose connector, wherein the water supply path comprises: a larger-diameter path having a stepped seat, the stepped seat comprising: an uneven seat having a plurality of projections and depressions that are alternately arranged on an upper surface of the uneven seat; and a smaller-diameter path having at a predetermined position thereof an inward projecting step, and the hydraulic control valve further comprises: a U-shaped flexible cup opened at a first end thereof and placed at a second end thereof to be near to the inward projecting step, the U-shaped flexible cup comprising: a flange outwardly protruded from an edge of the U-shaped flexible cup, and stopped by the uneven seat so that the U-shaped flexible cup is fitted into the smaller-diameter path while an outer surface of the U-shaped flexible cup is spaced apart from the smaller-diameter path by a predetermined gap; and a support ring fitted into an end of the larger-diameter path to prevent the U-shaped flexible cup from being removed.