Compact Designed Industrial Air Drain ensures that compressed air condenses moisture in dryers. The Air Drain has 4 mm oriifice.4 mm of orifice bleeds about 34CFM, which is equivalent of 6.5 kW of power. The Air Drain is made of quality grade material which ensures optimum durability for a long period. Compact Designed Industrial Air Drain is precise in design and accurate in dimension.