1.5 hp Horizontal Centrifugal Pump

1.5 hp horizontal centrifugal pump has maximum flow 4.9m3/h (21.6 gpm), maximum head 29m (95ft) and same diameter of inlet and outlet 25mm (1 inch). 3 phase centrifugal pump also has optional input voltage AC 220V/380V to 480V and optional input frequency 50Hz/60Hz, can be used for garden sprinkler irrigation, HVAC & refrigeration water circulation, etc.
Delivery date: 6-20 days
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1.5 hp horizontal centrifugal pump with 4.9m3/h maximum flow, 29m maximum head and 25mm diameter of inlet and outlet.


  1. The centrifugal pump has the horizontal structure. The diameter of the inlet and outlet are the same. 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. Horizontal centrifugal pump can be operating in series and parallel connection according to the requirements of flow and head.
  4. The installation angle of pump outlet can be 0°, 90° and 180° to meet different connection occasions.


Model 25-160A
Weight 34kg
Size 355*420*200mm
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) 2.9m3/h (12.8 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 angle of outlet 0°, 90° and 180°
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

Horizontal centrifugal pump dimension (unit: mm):

Boundary dimension Base dimension Flange dimension
h H L a A L1 B l b h1 4-Φd1 D D1 n-Φd
210 355 420 80 55 320 200 270 100 80 4-Φ14 Φ115 Φ85 4-Φ14

Horizontal centrifugal pump dimensional drawing
Tips: Classification of centrifugal pump
1. Classify by the number of the working impellers

  1. Single-stage pump: there is only one impeller on the pump shaft
  2. Multiple-stage pump: there are two or more than two impellers on the pump shaft. Then, the total head of the pump is the sum of the head of the n impellers.

2. Classify according to the working pressure

  1. Low-voltage pump: pressure below 10000mmH2O.
  2. Middle-voltage pump: pressure within 10000~65000mmH2O.
  3. High-voltage pump: pressure higher than 65000mmH2O.

3. Classify according to the impeller's water feeding means

  1. One-sided water feeding pump: namely, the single end suction centrifugal pump, the impeller has only one water inlet.
  2. Two-sided water feeding pump: namely, the double suction centrifugal pump, the impeller has one water inlet on each side. Its flow doubles that of the single-suction pump. It can be approximately regarded that two single end suction impellers are placed back to back.

4. Classify according to the pump shaft position

  1. Horizontal centrifugal pump: the pump shaft is in the horizontal position.
  2. Vertical centrifugal pump: the pump shaft is in the vertical position.

5. Classify according to the means of leading the water out of the impeller to the delivery chamber

  1. Volute shell pump: the water directly goes into the pump shell with the spiral line shape after coming out of the impeller.
  2. Guide vane pump: the water enters the externally set guide vane after coming out of the impeller, and then enters the next stage or flows into the outlet.

6. Classify according to the application
According to the application, it is can be divided into sewage centrifugal pump, hot water centrifugal pump, anti-corrosion chemical centrifugal pump, anti-explosion centrifugal oil pump and so on.

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