... . Extremely wear resistant. Timely delivery High pressure. High pressure control valveMainly technical inspection1,Nominal size(mm); 6 ,10 ,15 ,25 , ... .Main parts materialsPartsMaterialPartsMaterialbodyA105, WC9 etc.packingFlexible graphiteseat ring gasketFlexible graphite+mesh boardglandASTM A182 F316, A276seat ringASTM A276 431stemASTM A182 F316, A276spiral ...