The latter are developed both by using vacuum in the case of pneumatic suction conveying, or by making use of overpressure in the case of pneumatic overpressure conveying. In conditions of suction, materials are drawn through the pipeline and steer clear of any contact with the ambient air. When overpressure https://powderconveyingsystem27159.blogpostie.com/53344607/what-does-pneumatic-conveyor-mean