... 8" *Connection:Clamp, Weld,Thread,Union Sanitary butterfly valve, stainless steel butterfly valve, steel butterfly valve, butterfly valveTechnical features1) Sanitary stainless steel butterfly valve2) Material quality: ... valve: welded check valve, threaded check valve, clamp type check valve, movable check valve 4 ) Diaphragm valve: quick-installed diaphragm valve, triplet diaphragm valve, U-type ...