Longsheng SPP20-25 with impeller A at 1,450 r/min is a mixed-flow selection rated at 530 m³/h and 11.2 m head. The catalog lists a 270 mm impeller and 4 m required NPSH.
SPP mixed-flow process pumps — official family illustration; supplied configuration must be confirmed.
Published specifications
Manufacturer catalog data
Flow range530 m³/h
Head range11.2 m
Motor power22.00 kW
Speed1,450 r/min
Impeller A diameter270 mm
Required NPSH4 m
Motor at 1,000 kg/m³22 kW
Motor at 1,350 kg/m³30 kW
FamilySPP mixed-flow process pumps
Product details
The SPP family serves high-volume, relatively low-head process transfer. Its back-pull-out arrangement is described as allowing rotor service without dismantling the external suction and discharge pipework. Oil-lubricated bearings and a constant-level oil cup are part of the catalog construction.
Motor choice depends on liquid density. For this precise impeller and speed, the table lists 22 kW at 1,000 kg/m³ and 30 kW at 1,350 kg/m³. The 22 kW value shown here therefore applies to the water-density selection, not every process liquid. Alternative impeller letters and speeds have separate duties and should be checked as separate curve selections.
SELECTION NOTES
Specify the operating duty
Provide circulation flow, loop losses, liquid density and temperature, available NPSH and corrosion or solids conditions. Confirm impeller trim, motor allowance, seal and piping loads.
Published limits may describe different configurations within a series. Confirm that the required operating conditions are valid together.
