Water Pumps Blog

When the liquid is at a certain temperature, when the pressure is reduced to the vaporization pressure at that temperature, the liquid produces vapor bubbles. This phenomenon of generating bubbles is called cavitation.

The equipment that can accurately test all the performance parameters of the pump is the full performance test bench.

The curve that shows the relationship between the main performance parameters is usually called the performance curve or characteristic curve of the centrifugal pump. 

It refers to the ratio of the pump effective power to the shaft power. The power usually refers to the input power, that is, the power transmitted from the prime mover to the pump shaft, so it is also called shaft power.

Cavitation margin refers to the excess energy that exceeds the vaporization pressure per unit weight of liquid at the pump suction port.

The energy obtained by the unit weight of the liquid through the pump is called the head. The head is represented by H, and the unit is meter (m).

The volume of the liquid discharged by the pump per unit time is called the flow rate. The flow rate is expressed by Q. The unit of measurement: cubic meter/hour (m3/h), liter/second (l/s).

Radial Force. Oil Pollution. Suction Pressure. Calibration. Pipeline Stress. Fluid Characteristics. Working Status. Cavitation Allowance. Pump Speed. Impeller Balance. Pipe Shape. Working Temperature.

One is that the equipment is not qualified and the noise exceeds the standard. Another one is that the equipment is not operating normally. 

Operating noise of coupling. Reverse rotation. Water pump cavitation. Air in the pump body. Insufficient water pump operation frequency etc

The specifications of the water pump indicate the performance of the water pump,it's also the basis for pump selection and flow adjustment.