| 摘要 |
The irrigation nozzle has devices (1-7) for creating a main jet with variable length and conformation and this is an internal tubular casing (1). At one extremity (2) it is supplied with an irrigation liquid and has radial openings (3) for the outflow of liquid at the other extremity (4). An external sleeve (5) defines a delivery chamber (6) with the internal casing. This can be screwed on and unscrewed from the tube to close it and open a central outflow passage. |
