| 摘要 |
A flush tank water saver includes a base clamped to the tank overflow pipe and formed with a mechanism base extending over the flapper valve and having a valve operator pivot. This pivot carries an operator extending downward and toward the overflow pipe to a point behind the flapper valve when open. This same pivot also carries a float lever extending past the overflow pipe and having a float on its other side. The operator is spring biased to close the valve and is held in cocked position by a latch on another pivot. This latch is released by a pin on the float lever when the water level lowers to the water saver level. The float lever has a second pin engaged by a blocking surface on the latch when a full flush is desired. At the start of a flush a link with the flush lever moves the operator to cocked position and also moves the latch to float blocking position. If the flush lever is held up until the pin on the float lever is blocked by the blocking surface, a full flush results.
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