| 摘要 |
<p>A valve for animal watering tanks having a sleeve with a valve seat and with a valve activating tube which supports a spring-biased valve body which can be tipped away from the valve seat wherein a high water flow rate may be maintained even under low water pressure. Instead of supporting the valve body on the valve seat during valve opening, which inhibits water flow and causes wear, as is the case with a valve which closes with water pressure, this invention provides a sleeve in a valve which closes against the water pressure with an axial, annular shoulder, the diameter of which is larger than the diameter of the valve seat. The frontal surface of the tube nearest the annular shoulder is supported by said annular shoulder.</p> |
