Color | silver |
Shape | The cylinder |
Size | 20g/the |
Features | The high pressure water stop needle, an accessory of the high pressure perfusion machine, is fastened by ring pressure. The head is equipped with one-way cut-off valve, which can prevent the slurry from pouring under high pressure. The annular pressure expansion part is the rubber casing with a diameter of 13mm. The rubber casing is inserted into the grouting hole with a diameter of 13mm. The annular pressure bolt is rotated to compress the rubber casing so that the rubber expansion grouting nozzle is fixed in the grouting hole. (The one-way valve of the grouting nozzle can only be opened at a pressure above 0.4kN, so the grouting pressure must be higher than this value.) |