JX series single stage rotary vane vacuum pump group is ... and any elements which can court damage of pump.JX series single-grade rotating patch vacuum pump can be applied ... hospital, machine, chemical, metallurgy, electron, electric, press & textile etc.JX series single-stage rotary vane pump also can be combined ... range:1. Enlarge deflating capacity2. Suck mass of vapour . JX Series Vacuum Pump Group