| FluidWorld | fluidworld.net |
| Fluid machinery and parts |
General characteristics easy and solid design almost no wear 100% oil free no contamination of the transferred medium almost maintenance-free reliable and chem ... 
Special spiral rotated mechanism which cause the flow of the gas.
Weakness:Not chemical resistOnly for clean and dry gasesNot good gas tightExpensive
Benefits:High capacity and low ultimate vac ... 