Brass ball valve 1, Size: inch 1/2 to 4 2, Surface: nickel, brass, chrome 3, Handle: ... Seal: PTFE2, Size 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”, 2”, 2-1/2”, 3”, 4”3, ... Ball valve is produced according to CE standard.2. Leakage testing must be carried out using ... threaded sides of the ball valves must be hexagonal or octagonal in shape to allow a ... : SS7. NPT, BSPT, G screwSize: 1/2, 3/4, 1,1-1/4,1-1/2,2 inch