The struture of the "Spagold" Vortex Blower (air pump)is designed as 110V/60HZ,220V/50HZ,220V/60HZ,380V/50HZ.The structure of the unit is well organized and reasonable.The flow is large , it's easily adjusted and also convenient for operation , it's used for fish farms , farm tank , also used for air supply spare part of package, massage bathtub , glass products ,textile , electroplating ,environmentalfriendly equipment. FEATURES:The impeller adopts the three-dimensional design combined with sectional changes in circular air paths, which is smooth for airflow and low in noise. Adopt special super-quality motor that is short in staring torque, stable in operation and low in power consumption but excellent in performance. Non-oil lubricating designs to produce more purified air. The appearance is beautiful and modern, the structure is reasonable and compact, it is long service life.