The M-series is the first and best braze-on, self-piercing copper saddle valve. It is widely used and easily Installed on a charged line. After brazing the saddle portion onto line, the steel pin with valve core penetrates the e line and is locked into place simply by tightening the cap.

C&D Valve Braze-On Saddle Valve, 5/16 in Nominal, Copper-to-Copper Connection, Brass/Copper Body, PTFE O-ring Seal