2023-03-25

Take you to understand the relevant technical parameters of vacuum butterfly valves

The working principle of a vacuum butterfly valve is to open and close the valve by rotating the butterfly plate fixed on the rotating shaft by 90 °. Compared with other vacuum valves of the same caliber, vacuum butterfly valves have the advantages of simple structure, large conductivity, short valve body structure length, and fast opening and closing speed. There are three types of vacuum butterfly valves produced in China: manual, pneumatic, and electromagnetic. Manual vacuum butterfly valves are suitable for small diameter (nominal size DN32-300) vacuum extraction systems, connection of extraction pipelines, or cut-off of airflow. Pneumatic and electric vacuum butterfly valves can have a maximum nominal size of DN5000.

2023-03-25

Vacuum Knowledge | How to Protect Molecular Pumps Well?

1. The molecular pump cannot exceed the usage environment and scope specified by the manufacturer.

2023-03-25

Vacuum Knowledge | The Relationship between Vacuum Degree and Absolute Pressure

Vacuum degree, as the name suggests, refers to the degree of vacuum. In a closed space, the fewer gas molecules there are, the higher the vacuum degree. Absolute pressure refers to the pressure exerted by gas molecules on the container wall in a closed space, and there is a close relationship between the two.