Back Lamelové čerpadlo Czech Drehschieberpumpe German Compresor rotativo de paletas Spanish Labapump Estonian پمپ تیغه دورانی Persian Pompe à palettes French Pompa per vuoto rotativa Italian ロータリーポンプ Japanese 회전 날개 펌프 Korean Schottenpomp Dutch
1. pump housing
2. rotor
3. vanes
4. spring
A rotary vane pump is a type of positive-displacement pump that consists of vanes mounted to a rotor that rotates inside a cavity. In some cases, these vanes can have variable length and/or be tensioned to maintain contact with the walls as the pump rotates.
This type of pump is considered less suitable than other vacuum pumps for high-viscosity and high-pressure fluids[citation needed], and is complex to operate[clarification needed][citation needed]. They can endure short periods of dry operation, and are considered good for low-viscosity fluids[citation needed].