| 摘要 |
An irrigating device having a housing which can be set in the ground. A sprinkler head is mounted on a rotatable and axially slidable tube in the housing. A ring is fixed on the tube in the housing whereby the tube is lowered to seal a passage in the housing and close off the supply of water to the sprinkler head when water pressure is applied via a valve to the top of the ring. When water pressure on the ring is removed, the pressure will raise the tube so that the sprinkler head discharges water therefrom.
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