The mechanism of vertical self-priming pump is studied.

研究和叙述了立式自吸泵的机理。

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Self-priming sewage pump over-current components Material: cast iron, stainless steel.

自吸排污泵过流部件材质：铸铁、不锈钢。

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Supporting most of the internal combustion engine self-priming pump, mounted on a Mobile small car, suitable for field work.

自吸泵大部分与内燃机配套，装在可移动的小车上，宜于野外作业。

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