... ,220V/60HZ,380V/50HZ . MINDER Vortex Blower is designed as per 110V/60HZ,220V/ ... fish farms , farm tank , also used for air supply of spare part of package , massage ... design combined with sectional changes in circular air paths,which is smooth for airflow and ... air.The appearance is beautiful and modern, the structure is reasonable and compact, it is long service life. "MVB" SERIES VORTEX AIR BLOWER ...