| 摘要 |
<p>The object of this invention is to provide a hydraulic control valve for dri p hoses, which controls a flow of water according to a water pressure, thus keeping a pressure of water fed to a drip hose constant. The hydraulic contr ol valve includes a hose connector (110) clamped at opposite ends thereof to a branch hose (H/S) and a drip hose (H/N), a water supply path having a larger - diameter path (120a) and a smaller-diameter path (120b), a U-shaped flexible cup (200), and a support ring (300). The larger-diameter path includes a stepped seat (142) having projections (141) and depressions (142). The small er- diameter path includes an inward projecting step (150). The cup is placed at an end thereof to be near to the inward projecting step, and includes a flan ge (210). The support ring (300) is fitted into the larger-diameter path to prevent a removal of the cup.</p> |
