... a few seconds to 5000PSI working pressure, perfusion time faster than other model. Name: Item-500 Single High-pressure Injection Pump, Grouting PumpInjection pump ... easy to operate 3, high efficiency: in a few seconds to reach 0 ~ 5Mpa work pressure. Advanced industrial, labor ... with water plug: For a variety of gap leakage, wave leakage, underground water gushing. Grouting plugging directly with water. ...