Tapping stop valve, welding sleeve, or similar, connected to a tube has integrated safety closure device actuated by integral actuator element via moveable body in valve socket

摘要

The valve etc. has a socket (2) with axially moveable body (14) having a tapping drill (16) to tap a pipe and/or a valve body (42). A branch socket (24) connected to the socket for connection to a branch pipe, contains a safety closure device (28) with actuator element (32). The element operates the closure device via the moveable body. The closure device is automatically closed dependent upon a set pressure differential between an inner chamber (30) of the socket and an inner chamber of the branch socket.