plate type non-return valve China Deyuan Marine Fitting Co.,ltd are leading supplier of different type of marine valve,we can offer marine gate valve,marine globe valve,marine butterfly valve,marine check valve etc with GB standard,JIS standard,DIN standard,API.ANSI,BS standard etc.Pls contact us for more details Technical data Nominal pressure(Mpa) Nominal Diameter(mm) Applicable Medium 1.0 50~500 Fresh water,sea water DN(mm) Structure dimension Weight(kg) D d H 50 108 26 14 1.05 65 128 36 14 1.63 80 144 48 14 2.05 100 164 72 14 3.43 125 194 95 16 8.58 150 220 115 19 13.20 200 275 140 29 18.10 250 330 190 29 24.60 300 380 218 38 37.30 350 440 265 41 71.60 400 490 306 51 76.35 450 540 358 51 81.00 500 596 408 61 88.60 275N CE approval inflatable life jacket CO2 fire extinguishing system Marine horizontal/vertical oil fired boiler Marine air compressor marine centrifugal pump marine hydraulic steering gear Hydraulic capstan Tunnel thruster/bow thruster