Water Infusion Hole Sealing device or Expansion Ru

Using water injection and sealing hose is quick and easy,you only need to connect the water at site with water injection hose and fully put the hose into drilling hole.Under certain pressure,the hose expand and seal the hole,then inject water and crack the coal. a.Coal consumption for coal dust and gas emissions b.Anti-leak for the construction of underground engineering construction c.For mining tunnels, underground and underwater casting d.For underground water exploration ModelI.D(mm)O.D(mm)Expansion range(mm)Work stress free state(MPa)≥Hole diameter(mm)Test pressure≥Burst pressure≥ZF-19 Enhanced19±0.539±265+5-4