https://www.mktester.com/sf6-gas-analyzer/sf6-gas-recovery-charge-and-discharge-device.html
Gas recovery inflatable device. The system includes vacuum and return system, purification system, compression system, condensing system, can be applied to various power supply companies, transmission and power generation engineering companies, power plants, high-voltage transmission power stations, SF6 electrical switch manufacturing plants, etc. The department, as a Auxiliary equipment used by SF6 electrical products such as GCBP, GCBT, GIS, in installation, modulation, and overhaul. The above electrical products are used to recover, return, vacuum, gaseous, and liquid storage. The system can also be used as a device that evacuates and recover other expensive gases.