JSB is an overview of low pressure pump products for the domestic company summed up the advanced technology in a row of low pressure pump-QLB developed on the basis of a new generation of products. The equipment is widely used in the plant desulfurization, limestone transmission, the transmission power plant fly ash, cement Nanyao lose back-end dusting powder. From the terrain and altitude restrictions completely closed, clean, simple structure and a small amount of maintenance, low energy consumption and transportation uniform wear small, The pump delivered a large quantity of the main tenets of Feeder by locking gas, ash mixed gas Room jet delivery devices. Materials for locking gas transmission, gas dust on the jet mixer after a fluidized delivered to destinations along the tube. Conditions of use of the pump operating mode : continuous, intermittent. Adaptive air pressure, the working pressure 0.015-0.25Mpa, depending on distance transmission and transmission rate. Transmission distance "300m, high" for 32m, and the temperature was -20 กใ C -150 กใ C, the transportation volume of wind, pressure and pipeline size and hence different variable transmission capacity and transmission distance. (More details can be obtained from the letter calls)