... 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 ... : -30Anti-Oxygen glue applied to join body &bonnetSuitable medium: water , non ... . we are able to provide you test certificate and mill certificate if required.Production step :1) purchasing the material and forged the ...