... Description 2 W Series 2/2 Way Valves ( Large Aperture) Model: 2W160-10, 2W160-15, 2W200-20, 2W250-25, 2W350-35,2W400-40,.2W500-50 ... -10, 2S160-15, 2S200-20, 2S250-25, 2S350-35,2S400-40,.2S500-50Working media: air, water, oil, gasMotion pattern: Direct drive ...