... shell: 80120 , 3pcsMaterial: Stainless steel 304/SUS304Pipes: ABS or U-pvc or Stainless steelPumps: Chinese pump or Grondfos pumpFunctions:RO membrane ... low levelauto stop.THe high pressure pump would protect the machine when no water.If poor electrical power, short circuit, ... low levelauto stop.THe high pressure pump would protect the machine when no water.If poor electrical power, short circuit, ...