... 3A weld and male end, clamped 3.Disk:Out from full machined, high polished.Ra less than 0.6um. 9.5 ... :weld,thread,clamped 6.Seal:EPDM,SILICON,NBR Sanitary Butterfly Valve , butterfly valve, weld butterfly valve , sanitary weld butterfl valve , valve , stainless steel ...