... Sea water desalting R/O system·Boosting system·Water supply Connection ·Connection for inlet and outlet: PJE couplingHP32VMHP203,Φ76mmHP42VMHP423.5,Φ89mm. ... force of the pump.·For the wet parts, for HP model, it is SS304 or SS316; for VMHP, for investment casting part, ... the material is duplex stainless steel, for sectional material part, the ...