manual butterfly valve * Wide application range * CE,ISO9001~2000. * OEM service offer ... ,SS316Temperature of MediaLow TemperatureMediaWaterPlace of OriginZhejiang, China (Mainland)Brand NameHELImanual butterfly valve valve details :1.valve body:WCB,SS304,SS316,etc2 ... is the most suitable for the working environment. manual flange butterfly valve