適用工況：廣泛應用于抽送酸、堿液、油類、稀有貴重液體以及循環水設備配套的場合，特別是易燃、易爆、揮發性液體的抽送。

結構特點：閉式或半開式葉輪。自吸時間短，自吸高度最高能達到5m。閉式葉輪內循環方式，半開式葉輪外循環方式。

排氣方式：自動排氣。只要把出入口閥門打開即可實現。

Applicable conditions: widely used in pumping acid, lye, oil, rare and precious liquid and circulating water equipment, especially flammable, explosive, volatile liquid pumping occasions.

Structure features: closed or semi-open impeller. self-priming time is short, self-priming height can reach up to 5m.

Exhaust mode: automatic exhaust. just open the inlet and outlet valve.