... appearance,non-oil lubricatedand convenient to operate;2.Double muffling shell,designed reasonably,low noise,low energy ... tanks,prevent liquid from flowing back and the pump from breaking.USING RANGEUsed extensively for oxygenating for ... in ishing farm,seafood in restaurant,also for air supply to industrialmachine,medical instrument belching paint,Neon ... new type LPG and LNG etc. industrial air pump