... -DN200 3,PN:PN1.6-4.0MPa 4,Type:control valve Remote control pneumatic valveMainly technical inspection1,Material: lining ceramic/ body ... ,and fixed with 4 bolts,then connected air soure.Main parts materialsPartsMaterialPartsMaterialbodyA105, WC9 etc.packingFlexible graphiteseat ring gasketFlexible graphite ... asbestos yarn,asbestos yarn with graphite,graphite packing Remote control pneumatic valve