Common Vacuum Terminology 8

1.ring gasket：The utility model relates to an annular vacuum seal. Note: There are various vacuum sealing rings with different cross-section shapes, such as "O" seal rings, "V" seal rings, "L" seal rings and other profile seals (metal profile seals).
2.viewing window：As a vacuum window to observe the operation of the device. Note: In some applications, the optical performance of the observation window must be required.Evaporation Vacuum Coating Machine Factory
3.charge valve：A valve that fills a vacuum system with gas.
4.gas admittance valve：A vacuum control valve for placing gas in a vacuum system.
5.break valve：A vacuum valve used to isolate two parts of a vacuum system. Usually it can not be used as a control valve.
backing valve：A vacuum shutoff valve used in the front vacuum pipeline to isolate the front vacuum pump from the vacuum pump connected to it.
6.by-pass valve：A vacuum shutoff valve in a bypass pipeline.