| 摘要 |
A butterfly sprinkler in which the rotating head (6) has an upwardly projecting shaft (7) to fit in a bearing (4) supported by arms (3). The shaft (7) is of stepped configuration with the bearing being of similar configuration to thus form a skin (1) about the bearing. The nozzle (15) for the sprinkler is provided with a resilient flow regulator (18) arranged in such a way that as pressure of the water fed to the sprinkler increases the regulator is distorted to reduce the size of the orifice (19) to limit the amount of water flowing to a relatively uniform rate irrespective of changes of pressure. |
