| 摘要 |
Opening device in tappings of positive or negative pressure fluid conduits without supply interruption, comprising an implement coupled to a shut-off cock fixed to a pipe by means of an appropriately fixed conduit clamp, providing for its introduction into the entrance of the opened shut-off cock, passing through the inside of the latter and a cutting implement (4), drilling the conduit and removing the implement till the shut-off cock is closed, and removing the main body (1) from the device, the latter being provided internally with fluid-tight seals, internal access seals and a centering bush (3). |
