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...
Trucks appear at a container terminal in the port of Qingdao in China’s Shandong province on April 28, 2021, after the tanker A Symphony and the bulk carrier Sea Justice collided outside the ...
I. Introduction of valve
Vacuum valve is a vacuum system component used to change the direction of airflow, adjust the size of gas flow, cut off or connect the pipeline in the vacuum system. The c...
A vacuum bellow is an axisymmetric tubular shell that whose bus bar is corrugated in shape and which has a certain bendability. Therefore it is also referred to as a flexible or flexural tube. Due ...
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...