... 2,DN:DN15-DN200 3,PN:PN1.6-4.0MPa 4,Type:control valve Remote control pneumatic valveMainly technical inspection1,Material: lining ceramic/ ... body carbon steel + stainless steel2,DN: DN15-DN2003,PN: PN1.6-4 ... asbestos yarn,asbestos yarn with graphite,graphite packing Remote control pneumatic valve