Safety valve for underground gas lines, has valve housing with a groove that serve as a break section for gas pipe, with a valve seat arranged at the tension force-turned side of the groove

摘要

A valve housing (1) has a groove (8) that acts as a break portion of a gas pipe (11), and is positioned between the bearings (6,7), with a valve seat (5) arranged at the tension force-turned side of the groove.