QBY Air Operated Diaphragm Pumps is one of the new pump series. It has the property of completely pumping of the liquids with corrosion, particle, high viscosity, volatility, inflammability, explosiveness, deadly poisonous, as well as ceramic pulp, jelly, glue and waste oil in oil tanker. The properties are close to those of WLLDENPUMPS from Germany and MARIOWPUMPS from the U.S. The surface parts which flows the liquid is made from stainless steel and aluminum alloy and cast iron. It is also made of NBR, VITON, CR and PTFE based on the different liquids.

QBY Air Operated Diaphragm Pumps with air compressor, steam and industrial gas can have a suction of 7 m, maximum lift of 0-50m and flow of 0.8－30m3/h.