| 摘要 |
PURPOSE:To permit the performance of a pump to be exhibited to the utmost by making water level control by means of a mechanism provided for regulating the store level of the water to be ejected into the water discharge valve part. CONSTITUTION:When a water discharge valve 3 is opened, water is discharged outside from a body 1. The adjusting ring 7 having a notched part 8 is arranged turnably outside a water discharge valve receiving part 6 equipped with a water discharge port 5. When the adjusting ring 7 is turned, the opening area of the water discharge port 5 varies, and the store level of the water to be discharged from the water discharge valve 3 can be controlled, and the performance of the pump can be exhibited to the utmost. |
