The ball valves HBS-C, SIB-C, HBS-D and SIB-D are designed with a housing and 2 screwed-in connection pieces. The spindle is blow-out proof up to DN 25 and externally mounted. The socket/nipple connection variant enables rapid installation in corresponding high-pressure piping systems. With the safety locking handle option (type SIB), both one-sided locking in the closed position and two-sided position fixing can be achieved. Also available with lockable feature.