| 摘要 |
A [illegible] drinking valve for pigs. At the water inlet a nylon filter 1 is fitted, held by a nylon holder 2. Internally the valve comprises valve ball [illegible] 5, in which there is a large hole 11 and a small hole 12. [whole line illegible] from the small hole 12 and [illegible]. When the pigs bite over the valve, the [illegible] is acted upon so that a defined quantity of water runs out, corresponding to the volume of the valve. As a result the pigs can manage to suck water and water spillage is avoided. <IMAGE>
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