... wafer 3) Nominal pressure: PN10/16 1.Name:single plate check valve 2.Medium Capability:Freshwater, Sea water, Air, steam, ... , acid, alkali, salt. 3.Feature:(1).Long service life with reliable seal and without frequent maintenance. (2).Pressure ... butterfly valve, screw end butterfly valve,groove end butterfly, flange end butterfly valve,high performance butterfly valve and wafer type check valve. All ...