... by international standard Brass ball valve Brass ball valve: 1,Size: 1/4".3/8',1/2',3/4',1',11/4',11/2 ... ',2',21/2,3',4'2,Certificate: ISO9001 , CE 3,material: brass body , brass ball ... certificate and mill certificate if required.Production step :1) purchasing the material and forged the semi-products ... package against the design of customer 1/2' Long handle double female brass ball valve