temporary or permanent blocking encourages a tube.

摘要

SE describes a method to temporarily block or permanently the soul of a gas pipe (5). In the method, A BALL ELASTICA (6) IS FORCED ALONG THE PIPELINE (5) from spud GASOMETRO line (5) gas pressure. BALL (6) CREA FORCE ADJUSTMENT ENOUGH TO RESIST gas pressure in the pipeline (5). IN ADDITION, THE BALL (6) is forced to a position which is outside the building (1) OCCUPIED BY CONSUMERS OF GAS.