FDF Series Liquid Ring Vacuum Pump (in close coupled design) are displacement pumps of uncomplicated and robust construction with the following

particular features :

nearly isothermal compression
oil-free, as no lubrication in the working chamber therefore non-polluting
capable of handling of nearly all gases and vapors
small quantities of entrained liquid can be handled
easy maintenance and reliable operation
low noise and nearly free form vibration
wide choice of materials, therefore applicable nearly everywhere
shaft not in contact with the medium
protection against cavitation as standard
incorporated dirt drain, no metallic contact of the rotating parts.