Dry vacuum pumps are dry compressing pumps where no lubricants can get into contact with the pumping media. Thus an absolute hydrocarbon free vacuum is the result. Oerlikon Leybold Vacuum offers different types of dry compressing vacuum pumps which vary in the principle of operation and are used in different fields of application: diaphragm pumps DIVAC, scroll pumps SCROLLVAC as well as screw type pumps SCREWLINE and DRYVAC
Two Stages Diaphragm Vacuum Pumps
DIVAC L dual stage DIVAC L diaphragm pumps are suited for almost all requirements in the chemistry lab. They are basically corrosion and solvent resistant since their parts in contact with the pumped medium are made of PTFE (Teflon), FFPM (Kalrez) and PVDF (Solef).
The DIVAC T range of diaphragm pumps comprises backing pumps which are used in all applications requiring an especially low base pressure while having to maintain an oil-free vacuum. The DIVAC T pumps have been specially developed as backing pumps for wide range high vacuum turbomolecular pumps.
The dry compressing SCROLLVAC SC-D pumps operate on the principle of a scroll compressor. Two or more Archimedes spirals engaging each other. The vacuum is generated by reducing the volume of the pockets and compressing gases from the outside towards the inside thereby pumping the gases. SCROLLVAC pumps operate absolutely oil-free with a high effective pumping speed in the whole range of operation.
The SCREWLINE pumps were developed in view of the special requirements of industrial applications. The innovative design allows these pumps to be used whenever reliable, compact and low maintenance vacuum solutions are required. The pumps offer a high degree of flexibility. Inlet and exhaust connections are made through universal flanges, respectively clamped flanges, permit simple integration within the system. Through the accessories which …