... to face dimensiions adopt short series, and light weight valve is adopted, so as to save pipe supporter.2 ... 3.The blade type gate disic helps medium cutoff anf residue discharge so that the valve can be operated withoyt ... DN90~900mm, NPS2"~36"Suitable temperature: -29~+245°CConnecting flange: ANSI B16.5, GB/T9113, JB/T79, HG, SH, JIS ... , manual, umbreall, gear, electric Wafer rising Stem Knife Gate Valve