API Casting Gate Valve 1.Size:DN25-1000mm 2.Pressure: PN1. ... WC6,CF8,CF8M,CF3,CF3M API6D ISO9001 Through Conduit Gate Valve 1.Size:DN25-1000mm2.Pressure: PN1.0-16. ... the production quality effectively Specification:1.Pipeline valve: API6D,API6002.Steel flat gate valve for pipeline: JB/t52983.Pipe flange ... .7.Automatic removal of tne high prssure is the intermal cavity when the valve is about to close(see ...