WLW vertical oil-free (corrosion-resistant) reciprocating vacuum pump is the upgraded product to replace W horizontal vacuum pump, and the principal equipment to obtain rough vacuum.

2BEA series water ring vacuum pumps and compressors is a kind of high-efficiency and enger-saving product developed on the basis of years of production experience and scientific research, combined with international advanced technology, typically used for pumping gas without solid particles, insoluble in water, and non-corrosive, so as to form a vacuum or pressure in a sealed container.

The functional diagram of rotating vane pumps is shown in the figure. The rotating vane pump mainly consists of the stator, rotor, rotary vane, fixed cover, spring and components. The structure is formed by rotor which eccentricly installed in the chamber of the stator (the outer circle of the stator is tangental to the inner surface of rotor, and the gap between the two is very small) and the two rotary vanes which adhere to the inner wall of the stator with the assistance of spring tension and centrifugal force and slide in the rotor slot, and when the rotor rotating, the two rotary vanes are always sliding along the inner wall of the stator.

2BV series liquid ring vacuum pumps are suitable for pumping the gases and steam. Its suction pressure can reach 33mbar (abs) (i.e. 97 % vacuum degree).

2XZ series vacuum pump has bipolar direct connecting structure, the working performance Is consisted of high pressure and low pressure grades. The inhalant hole Connects with vacuum equipment, the air in the container will be inhaled and exhausted Greatly while running.