| 摘要 |
A cylindrical, or part cylindrical, diaphragm for a drip emitter is disclosed, the diaphragm having a depressed labyrinthine path in the outer face thereof. The path is constituted by a groove, there being one or more holes in the diaphragm which place one end of the groove in communication with the interior of the diaphragm. The diaphragm has a thinner area which forms a distortable membrane. The other end of the groove communicates with the space which lies radially outwardly of the membrane. The diaphragm is placed in a cylindrical holder which has a hole in the walling thereof. Said membrane extends over the hole in the holder. |
