Iyini isando samanzi?
Isando samanzi siwumphumela ovame ukuphikisana nokucabanga kokumisa amanzi ahambayo ohlelweni loketshezi; umfutho wamanzi ohlanganyelwe usebenza njenge "hammer" futhi ungadala i-high-pressure shockwave elilimaza, noma libhubhise amapayipi, ama-valve, noma imishini.  Ngokwesibonelo, kungase kube lula ukuvala i-valve yamanzi. Nokho ngemva kwesikhashana ingase iqhume ngenxa yokucindezela okungazelelwe kwawo wonke amanzi "aphezulu" aphoqeleka ukuba ame.