Definition Of Model


SZ : Fluorin plastic centrifugal pump
50 : Suction diameter (mm)
32 : Drainage diameter (mm)
160 : Nominal diamter (mm) of impeller

Structure Feature

  • SZ pump has one impeller, axial suction and radical discharge
  • Simple structure, shaft is directly connected with impeller
  • Easy for pipe, inlet and outlet are connected by standard flanges
  • Wet parts are made of F26. F46, accessories are made of cast iron (HT200)

Typical application

  • Any concentration of acid, salty solution, strong oxidants, organic solvent etc. Strongly corrosive medium
  • Petrol chemical, pesticide, acid cleaning, dying, paper making galvanization, etc.

Operating conditions

  • Thin medium not containing grain or fiber
  • Medium temperature : -20°C-120°C
  • Medium density : max 1.35 x 10 kg/m3
  • Ambient temperature : Max +40°C
  • Altitude max 1000 m
  • Pressure : Max 10 bar


  • TEFC motor 2 pole
  • Protection class IP55
  • Insulation level : Class F
  • Standard voltage 50 Hz, 3 x 380v

Curve conditions

  • Curves tolerance is according to ISO9906, Annex A
  • All curves are based on the measured value of constant motor speed 2900rpm, 50Hz, 3 x 380V
  • The measurement were made with airlines water at temperature of 20°C. The curves apply to a kinematic viscosity of 1mm2/s (1 cst)
  • It is sugested to operate the pump in the scope of the bold curve, to prevent motor from overoad
  • When pumping liquids with a density higher than of the operation conditions, use motors with correspondingly higher outputs

Performance curve

  • Q/H : Means the curve of the flow and head at the nominal rotating speed
  • Power curve : P2 means the pump input power, if the medium density is 1 x 10 kg/m3

Installation conditions

  • When installation, please make sure the pump would not be effected by the pipeline force when pump operation
  • The pump should be strongly fixed on the horizontal base
  • In order to make motor work well, pump should be installed on the frozem-free and ventilate place
  • The electric protection devices should protect pump from being damaged by phase lack, unstable voltage, electric leakage overload

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