| 摘要 |
A fill valve having top and bottom openings that are opened and closed by up and down movement of an upper seal and a lower seal that are both connected to a float, wherein the upper seal is positioned below the top opening and the lower seal is positioned below the bottom opening, and wherein the upper seal is larger than the lower seal such that the total force required to open or close the valve is very small, thereby enabling the float that is used to be small as well. |
