IMPROVEMENTS INTRODUCED IN THE PATENT OF INVENTION NUM. 200201352 BY DEVICE TO MAKE DERIVATIONS UNDER PRESSURE IN FLUID DRIVING NETWORKS.

摘要

Improvements introduced in the invention patent n ° 200201352 for "device for making derivations under pressure in fluid conduction networks" which includes a T-shaped bypass body attachable by means of a seat on the pipe to be derived and suitable for the placement of a drilling tool, in its upper part for the realization of said bypass. Essentially characterized in that it comprises a coupling between the axis of the drilling tool and the milling cutter by means of a cylindrical or conical male and a conjugate mouth secured by means of a transverse pin, there being in the shaft of the drilling tool shaft a groove or groove that avoids testing of false pressure. The device has two independent valves in the body of the drilling tool for the placement of the pressure gauge and the pressurization or similar device. At the same time, the neck of the bypass body has a groove in the cover coupling loop to avoid forced pressurization of said cover when placing or removing it.