| 摘要 |
<p>Spray apparatus comprising spray nozzles connected to a source of spray liquid via a pump and pipe-work (110), wherein at least a portion of the pipe-work is provided with an internal inflatable bladder (112) that is arranged to be deflated during spraying and to be inflated substantially to fill the pipe-work and thus to purge the pipe-work after spraying is finished or to purge pipe-work not required during spraying.</p> |
