High vacuum manual angle valves, swith manual rotation of the handle to drive the opening and closing of the valve plate. with the advantages of smooth action, small size, reliable use, good sealin...
I. Mechanical pumps
The main function of the mechanical pump is to provide the necessary pre-stage vacuum for the start-up of the turbomolecular pump. Commonly used mechanical pumps include mainly ...
Many vacuum process installations are equipped with a Roots pump on top of the pre-stage pump, both to increase the pumping speed and to improve the vacuum. However, the following problems are ofte...
The quality of vacuum pump oil depends on the viscosity and vacuum degree, and the vacuum degree depends on the value at different temperatures. The higher the temperature is, the more stable the v...
Many people may see gas ballast in the instructions of some oil sealed vacuum pumps. For example, there may be two types of vacuum degree for rotary vane vacuum pumps: one is the value of gas balla...
Rotary vane vacuum pumps are used as oil sealed pumps most of the time. During the use, some oil and gas will be expelled together with the pumped gas, resulting in oil spray. Therefore, rotary van...