Process for retrofitting gas flow controller in service line comprises connecting the service line to sluice, inserting the gas flow controller through the sluice into the service line, and anchoring gas flow controller in service line

摘要

Process for retrofitting a gas flow controller (2) in a service line (8) starting at a gas supply line and ending in a cellar space comprises connecting the service line during the retrofitting stage to a sluice, inserting the gas flow controller through the sluice into the service line under gas pressure, and anchoring the gas flow controller in the service line outside the cellar. An Independent claim is also included for a device (1) for carrying out the above process consisting of a gas flow controller connected to a gas-permeable fixing element (3) which is pressed under the force of a pressing element (7) against the inner wall of the service line.