horizontal plastic centrifugal self-priming pump for general application permanent magnet drive system separation of liquid chamber/atmosphere by means of an isolation shell synchronous drive transmitted by inner magnet a......horizontal plastic centrifugal self-priming pump for general application permanent magnet drive system separation of liquid chamber/atmosphere by means of an isolation shell synchronous drive transmitted by inner magnet and outer magnet system alumina ultra pure 99,7% shaft, ptfec brgs close coupled execution