40 hp Horizontal Centrifugal Pump

40 hp horizontal centrifugal pump is a 3 phase centrifugal water pump, has optional input voltage AC 220V/ 230V/ 380V/ 400V/ 415V/ 460V to 480V, optional input frequency 50Hz/60Hz, maximum flow 32.5m3/h (143 gpm), maximum head 127m (417ft) and same diameter of inlet and outlet 65mm (2-1/2 inch). 40 hp single end suction centrifugal pump with cheap price can be used for high-rise building pressurized water supply, HVAC & refrigeration water circulation, etc.
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40 hp horizontal centrifugal pump with 32.5m3/h maximum flow, 127m maximum head and 65mm 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 65-315
Weight 320kg
Size 570*930*390mm
Power 40 hp (30kW)
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) 17.5m3/h (77 gpm, American system) 25m3/h (110 gpm, American system) 32.5m3/h (143 gpm, American system)
Head (max. head to min. head) 127m (417ft) 125m (410ft) 122m (400ft)
Efficiency 32% 40% 44%
Inlet diameter 65mm (2-1/2 inch)
Outlet diameter 65mm (2-1/2 inch)
Installation angle of outlet 0°, 90° and 180°
Nominal diameter of impeller 315mm
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 2.5m
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
300 570 930 125 100 700 390 620 290 100 4-Φ20 Φ185 Φ145 4-Φ18

Horizontal centrifugal pump dimensional drawing
Tips: What is the single-stage centrifugal pump?
The single-stage pump refers to a pump with only one impeller. The general single-stage pump has a high head of 125 meters (410ft). It has the advantages such as the simple structure, stable performance, high speed, small size, light weight, high efficiency, large flow, easy operation and maintenance and so on.
Classification of the single-stage centrifugal pump
According to the installation position of the motor, it is classified into: horizontal single-stage pump and vertical single-stage pump.
According to the flow pass of suction, it is classified into: single-stage single-suction centrifugal pump, single-stage double-suction centrifugal pump.
Constitution of the single-stage pump
The single-stage pump includes a pump body, a pump cover, an electric motor with an output shaft, a pump shaft, a bearing housing, an impeller, a mechanical seal and a machine gland mounted in the single-stage pump body. It still has the characteristics that it includes a double-clip coupling set between the motor output shaft and pump shaft, as well as the pilot bearing supporting the pump shaft, which is mounted on the bearing seat. The above-mentioned double-clip coupling is rigidly connected to the motor output shaft and the pump shaft, respectively. In addition, a space is reserved between the motor output shaft and the pump shaft to facilitate mechanical seal and machine seal gland assembly and disassembly. Therefore, there is no need to disassemble the motor and the pump cover in repairing or exchanging the mechanical seal.

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