Technical parameters sealing diameter: 30-120mm (according to user demand for processing) Working Pressure: 1-8Mpa (according to user needs processing) starting pressure relief valve: 0.4-0.5Mpa work flow: 4-4.5 tons of water per hour ( Coal injection sealing device, coal injection grouting sealing device) sealing depth: 1M-8M hose expansion coefficient: 60% -100% Principle grouting grouting sealing liquid flowing through the core tube sealing device, with increased pressure inside the hose, the hose length becomes shorter prompting gas drainage water sealing device, larger diameter tunnel expansion sealing device with water until it is completely drilled hole wall snapping up mine water sealing, to achieve The purpose of the drilling sealed when the pressure reaches a certain value, the pressure control valve to open the top, start grouting. Rubber sealing water, a water sealing device, Bo-Bo-rubber provided by Hengshui Rubber Products Limited. Hengshui Bo-Rubber Products Co., Ltd. (www.jxboguang.com/) strong, credible, Hebei Hengshui transportation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Bo-Rubber and you hand into the brilliant, for a better future!