空气压缩机气液分离滤芯，流向由外向内，真空泵气液分离滤芯流向由内向外。

Coalescing filters used in air compressors flow the outside of the element in while coalescing filters used in vacuum pumps flow the inside of the element out.

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当其他公司只提供作为另加选择时，美国旋风的真空泵的标准规格已包括有下列的重要配件- 高品质入口过滤芯，高级的排气消音装置，抽吸软管和工业级槽钢底架。

These vacuum pumps come standard with many important features that others offer as options - quality inlet filter, premium exhaust silencers, suction hose and industrial strength channel iron frame.

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