They can not be used for evacuating the oxygenic,poisonous and explosive gases and gases which can react with pump oil easily.Neither can they be used as compressor and transmillion pump.

• 该泵不可用来抽含氧过高的、有毒的、易爆的或与泵油发生化学作用的气体，也不可当作压缩机或传输泵使用。