| 摘要 |
An improved hydraulic valve comprising a housing having a first coupling end and a second coupling end is provided. The housing includes a receiving recess having an opening atop. The lower section is provided with a cone-shape wall. The inner wall of the middle section defines a plurality of spines, and the upper section having a threaded portion. A controlling tap has a cone-shape body which is provided with an inlet opening and an outlet opening is disposed compactly within the cone-shape wall of the housing. The controlling tap is connected with a stem having a spiral rib in the middle portion. A handle is connected to the top of the stem. A stopping collar having a plurality of spines at the outer peripheral portion is disposed within the middle section of the receiving recess of the housing wherein the spines of the stopping collar can be readily meshed with the spines of middle section of the receiving recess of the housing. The central portion of the collar is provided with a central hole having a spiral portion extending lengthwise. Wherein when the handle is rotated, the spiral rib of the stem can be readily moved along the spiral portion of the stopping collar. And a cover lid having an opening for passing of the stem being provided. The peripheral of the cover lid is provided with a threaded portion which can be engaged with the threaded portion of the upper section of the housing and pressed against to the stopping collar. Wherein when the handle is rotated, the controlling tap can be moved upward or downward.
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