Structure and working principle of vacuum and ultra-high vacuum plug valves/gate valves

Ultra-high vacuum plug valve series is an ultra-thin plug valve for ultra-high vacuum, which is developed on the basis of the original old model plug valve. The outer surface of the valve is silver gray matte treatment, high-grade and generous. The main parts such as valve body and valve plate are made of 304 stainless steel with very low outgassing capacity, while the transmission parts to realize the movement of the valve body are made of 316L stainless steel welded bellows, and the sealing of the valve plate is made of imported fluorine rubber ring with very low outgassing capacity.

Bellows in Vacuum Valves

Bellows in the petroleum, chemical industry has a wide range of applications, playing a pressure sensor and isolation role, production control and safety has an important role, with China's petroleum, chemical and other industries continue to develop and innovate, the production equipment to put forward higher requirements, so the importance of the choice of bellows is also of great concern to the importance of this paper mainly discusses the application of bellows in the control valve.

Vacuum pump selection principles and related calculation formula

The vacuum pump selected must be able to pump the gases released during the process. For example, if the process generates water vapor, the selected vacuum pump must be able to pump the water vapor.

International Vacuum Classification

CF flanges are available in sizes from 1.33 inches to 16.5 inches and in both fixed and swivel versions. CF flanges feature the highest level of machining quality and clean packaging in compliance with ultra-high vacuum, and are available in stainless steel, such as SUS304/L, 316LN, and other materials such as titanium.

Introduction to Vacuum Windows Viewports

Windows are used to make devices for observation, optics and energy introduction. High Vacuum (HV) is joined by O-ring. Ultra-high vacuum (UHV) windows are bonded by vacuum hard soldering. Most of the windows are "zero-length windows" where the glass surface does not protrude beyond the mounting flange, which not only protects the window from accidental damage, but also provides a good viewing angle. Features: UHV windows are available in borosilicate glass, quartz (under development), sapphire ......