1.5 hp Vertical Centrifugal Pump

1.5 hp centrifugal pump is a single stage centrifugal pump, has same diameter of inlet and outlet 25mm (1 inch), maximum flow 4.9m3/h (21.6 gpm), maximum head 29m (95ft), optional input voltage AC 220V/ 230V/ 380V/ 400V to 440V/ 480V and optional input frequency 50Hz/60Hz. 1.5 hp vertical centrifugal pump can be used for long-distance water delivery, pipeline pressurization, high-rise building pressurized water supply, etc.
Delivery date: 6-20 days
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1.5 hp vertical centrifugal pump with 4.9m3/h maximum flow, 29m maximum head and 25mm diameter of inlet and outlet.


  1. The centrifugal pump has the vertical structure. The diameter of the inlet and outlet are the same. And the inlet and outlet are on the same center line, so that the vertical centrifugal pump can be installed in the pipeline like a valve. If a protective cover is added, it can be used in the open air.
  2. It is easy to install and maintain. No need to dismantle pipeline system, just lifting off the conjunction flat nut of vertical pump. Then all the rotor parts can be taken out.
  3. Vertical centrifugal pump can be operating in series or parallel connection according to the requirements of flow and head.
  4. Vertical pump can be installed in vertically type or horizontally type according to the requirement of pipeline system.


Model 25-160A
Weight 34kg
Size 300*270*415mm
Power 1.5 hp (1.1kW)
Phase 3 phase
Input voltage * AC 220V, 230V, 240V, 380V, 400V, 415V, 440V, 460V, 480V
Input frequency * 50Hz, 60Hz
Flow (min. flow to max. flow) 2.6m3/h (11.4 gpm, American system) 3.7m3/h (16.3 gpm, American system) 4.9m3/h (21.6 gpm, American system)
Head (max. head to min. head) 29m (95ft) 28m (92ft) 26m (85ft)
Efficiency 27% 31% 29%
Inlet diameter 25mm (1 inch)
Outlet diameter 25mm (1 inch)
Installation mode Vertical type or horizontal type
Nominal diameter of impeller 160mm
Pump type Booster pump
Number of stages Single stage
Motor type Y/Y2 series motor
Motor speed 2900rpm
Impeller material 304/316 stainless steel
Seal material 304 stainless steel, tungsten carbide, fluorine rubber
Inlet max. pressure 1MPa (145 psi)
(NPSH)r 2.3m
Usage Water, or liquids compatible with pump component materials.
1. The volume of solid particles should be less than 0.1% in unit volume, and the granularity should be less than 0.2mm.
2. The temperature should be lower than 60℃.
Environment Temperature: <40℃, humidity: <95%, altitude<1000m
Warranty 12 months

Vertical centrifugal pump dimension (unit: mm):

Boundary dimension Installation dimension Flange dimension
L B H C1*B1 A C2*B2 4-Φd1 ΦD ΦD1 n-Φd
300 270 415 90*130 70 60*100 4-Φ14 Φ115 Φ85 4-Φ14

vertical centrifugal pump dimensional drawing
Tips: How to install the centrifugal pump on the high-rise building correctly?
If the installation site of the centrifugal pump belongs to a higher level of the high-rise building, and the water pressure is rather low, it shall consider installing the booster pump in the tap water pipe. In selecting the water pump and installing it, it shall consider that the water pump interface should be consistent with the tap water interface.

  1. Centrifugal pump installation position
    The booster pump is usually installed behind the home water meter, that is, the water pump installation position is after the water meter position, or it can be installed in front of the water inlet of the gas water heater. When installing in the hot water outlet, a hot water pump with the temperature resistance above 85 ℃ should be selected.
  2. Centrifugal pump installation
    Remove the junction pipe connecting the cold water valve and the water heater inlet, install the pressurizing pump at the appropriate position on the lower right side of the water heater (fix two self-tapping screws on the wall), and connect the water pump to the water heater with the chill water pipeline of the heater with the metal hose or aluminum plastic pipe. The external water pressure switch is generally connected to the inlet section of the pressurizing pump, and the direction of the arrow should be pointed out according to the instructions. The automatic pressurizing pump does not require an external water pressure switch.
  3. Matters need attention in installing the centrifugal pump
    a. Before installation, it is required to carefully read the installation and operation instruction manual, and install as the manual requirement.
    b. Check the power data on the pump nameplate, confirm the pump is applicable to the power source to be used, and ensure the reliable earth of the socket.
    c. Only when the power source is turned off, the connection can be made in the wiring box of the water pump.
    d. It is better to install the hot water centrifugal pump on the pipes with liquid flowing upwards.
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