| 摘要 |
Aeration apparatus for aerating water delivery systems such as hosepipes, aquaria and hydroponics is described. The apparatus comprises at least one water delivery pipe fitting having means to suck air into a water pipe. A water delivery pipe fitting 1 has a first short pipe portion 2 which, in use, is connected at the left side to a water supply feedline pipe carrying water and nutrients to be delivered to a plant or the like (not shown). The first pipe portion 2 is connected to a second short pipe portion 3 and a third pipe portion 4 by way of a T-piece connection 5. The third pipe portion 4, is connected downstream of the first and second portions 3, 4. The second pipe portion 3 has an open end 3a through which air is sucked into the second pipe portion by way of the Venturi effect, in use, and thus into the third pipe portion to be mixed with water and nutrients flowing therethrough from the first pipe portion 2. A water flow control valve may also be provided. |
