Manual wafer butterfly valve 1. Material:GG20,GG25 2. Medium:WOG ... :API 6D,CE,TS. 4. Std:GB,DIN,BS,EN. Manual Wafer Butterfly Valve1) Size: DN25-DN10002) Pressure class:1.0Mpa ... , 1.6Mpa3) Temperature: -10°C ~ 80°C /15°C ~150°C 3) Design Standard: DIN, BS, EN593, GB4) Material ...