| 摘要 |
A valve having a fluid inlet, a fluid outlet, a rotatable crank pin, a shut-off valve member, and a metering valve member is disclosed. The shut-off valve is operatively-connected to the crank pin, and the metering valve operatively-connected to the crank pin. The metering valve has a small bypass passageway, which enables a very small flow of water to bypass the metering valve member when the metering valve member is in its fully closed position. Rotation of the crank pin causes the metering valve member or the shut-off valve member to move into a selected position.
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