Metal Elevator Shaft,Metal Shaft,Metal Frame Elevator Shaft,Prefabricated Metal Elevator Shaft Foshan Shengbang Steel Structure Co.,Ltd , https://www.sbsstructure.com
Working principle Motor (4) Drives the diaphragm (2) on the left and right pistons through the gearbox (3) one after the other. In both the left and right pump chambers, there are four one-way ball valves (1) up and down, the movement of the diaphragm causing a change in the volume in the working chamber, forcing the four one-way ball valves to open and close alternately, Inhaled and discharged.