ZXB type self-priming pump, its mark, rated performance point and size are equivalent to international standard iso2858-1975. ZXB self-priming pump has many functions such as "one-time drainage, life-long self-priming". ZXB type self-priming pump adopts the flow passage parts designed by advanced technology, with high efficiency, short self-priming time, and no need of bottom valve, direct start, automatic water outlet, self-priming height can reach about 10 meters.