Model BPFZ non-seal self-control self-suction pump is a new product by way of imprioving and new designing on the advanced experience basis of the related products both at home and abroad and a replacement for the conventional domestic same ones and features temperature withstand, pressure withstand, wearable," permanent self-suction after first flow-leading ". It is made of cast iron, cast steel, stainless steel, reinforced polypropylene etc. materials and in 5 different patterns and more than one thousand specifications and can be used for electron, electric power, chemical industry, metallurgy, pharmacy, food, fire fighting, environmental protection, electric plating, water purification, municipal works, national defense, textile, mine, construction etc. Trades.