1.connection:weld,male,thread 2.handle:Plastic handle, also have other ... And low torque, SMS, DIN 3A weld and male end, clamped 3.Disk:Out from full machined, high polished. ... choice. 5.Connection:weld,thread,clamped 6.Seal:EPDM,SILICON,NBR Sanitary Butterfly Valve , butterfly valve, weld butterfly valve , sanitary weld butterfl valve , valve , stainless steel valve... Sanitary Butterfly Valve