... 2,DN:DN15-DN200 3,PN:PN1.6-4.0MPa 4,Type:control valve Remote control pneumatic valveMainly technical inspection1,Material: lining ceramic ... driving axes NAMUR froove make the feedback,and fixed with 4 bolts,then connected air soure.Main parts materialsPartsMaterialPartsMaterialbodyA105, ... packing,PTFE-impregnated asbestos yarn,asbestos yarn with graphite,graphite packing Remote control pneumatic valve