... control valveMainly technical inspection1,Nominal size(mm); 6 ,10 ,15 ,25 ,32 ,40 ,50,65 2,Seat ring diameter3,Rated flow coefficient4 ... -through,cast globe valve ; 3-way cast globe valveSize15,20,25,32,40,50,65,80,125,150,200mmPressurePN1.6,4.0 ...