Lub hauv paus blower, tseem hu ua lub teb lobe blower los yog ib tug zoo displacement blower, yog ib hom cua compressor uas feem ntau siv rau ntau yam kev lag luam kev siv. Nov yog qee qhov kev siv tseem ceeb ntawm Roots blowers:
Cov hauv paus hniav tshuab, tseem hu ua qhov zoo hloov pauv tshuab, yog hom cua compressor siv rau kev lag luam thiab kev lag luam.