| 摘要 |
<p>A self cleaning valve assembly includes a valve body having an internal valve cavity. A cylinder member received in the valve cavity has a first sealing surface and a cylinder wall, and divides the valve cavity into a liquid-free cavity portion and a flow cavity portion. A spindle includes a spindle body contacting the first sealing surface to continuously prevent pressurized fluid in the flow cavity portion from entering the liquid-free cavity portion. A spindle piston end has a wiper member in a receiving groove frictionally contacting the cylinder wall. A handle pinned to the valve assembly directly contacts the piston end. Handle rotation displaces the spindle from a valve closed to a valve open position permitting pressurized fluid flow into the flow cavity portion. The wiper member wipes a contaminant off the cylinder wall and further prevents contaminant entrance into the liquid-free cavity portion. 66 38 Af' D 62 so, 484 51- 68/ 32- 70 88- 52- L 72- 25 44- F E 84 74 loo Fig. 5</p> |
