Plane type and cone type water ring vacuum pump At present, the world's water ring vacuum pump is divided into two categories: plane type and cone type, and the plane type technology takes the water ring vacuum pump designed by Siemens of Germany as the leader.Based on Siemens technology, the company is specialized in the development of planar water ring vacuum pump. The conical pump, represented by Nessler in the United States, has been recognized in many industries. It has started to develop a new type of conical water ring vacuum pump, which can better meet the needs of customers.Industrial craneRoots BlowersRoots Vacuum Pump