| 摘要 |
PURPOSE: An improved automatic valve for power sprayer is provided to increase an operational accuracy of the sprayer, to expand usability of the sprayer, and to ease assembling of the sprayer. CONSTITUTION: The automatic valve for a power sprayer includes a main body of the valve(30) formed of an inflow chamber, an inflow entry(32), a drain passage that is smaller than the inflow entry(32), a drain(34) and a sealed chamber; an outlet vent(36); a bracket(38); a spring(40) and a ball valve(42) between the bracket(38) and the drain passage; a hydraulic valve(44) having inlet holes; an operational axis(50) having a washer(48) at the end to completely block the sealed chamber; a pressure control spring(52) for bringing the front end of the operational axis(50) close to the ball valve(42).
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