The non-bleed controller uses air only when exhausting the line to the controlled device .
无放流式调节器只有在通至调节机构的管道排气时才消耗空气。
A simple filtering and oil-recovery device for purifying the mould cooling air containing large amount of oil fumes in the exhausting pipelines has been described.
介绍了一个简单的过滤和油回收装置，用于带油烟的模具冷却凤排放时进行净化和油回收。
The non-bleed controller uses air only when exhausting the line to the controlled device.
无放流式调节器只有在通至调节机构的管道排气时才消耗空气。
Unique air exhaust device which completes exhausting the steam and vapor from the heating oven.
特殊排气装置，可将烘箱内水气及废气排除。
The negative pressure air exhausting device can effectively prevent combustible gas from exploding under positive pressure so as to ensure safety production.
负压排风装置可有效预防可燃气体正压爆炸，保证安全生产；
The negative pressure air exhausting device can effectively prevent combustible gas from exploding under positive pressure so as to ensure safety production.
负压排风装置可有效预防可燃气体正压爆炸，保证安全生产；
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