How to choose a centrifugal pump?

When choosing a centrifugal pump, we need to consider a number of factors, the following are the specific points:

Determining basic parameters

Flow: According to the actual use needs, calculate the flow of the required liquid, generally in m³/h or L/s as a unit. For example, large cooling systems in industrial production may require a flow rate of several hundred cubic meters per hour, while small sewage treatment equipment may only require a flow rate of a few cubic meters per hour.

Head: Calculate the height of the liquid to be lifted, pipeline resistance loss, pressure in the equipment, etc., and obtain the required head, in meters (m). For example, to transport water from the ground to a 10-meter-high roof water tank, considering factors such as pipeline resistance, it may need a head of about 15 meters.

Considering medium characteristics

Density: The density of the medium affects the power and performance of the pump, and the density of the medium requires more power to transport, such as the the pump power required to transport dense sulfuric acid solution and  water is different.

Viscosity: Liquid with large viscosity and poor fluidity will reduce the flow and efficiency of the pump, and it is necessary to choose the appropriate impeller form and speed, such as the centrifugal pump transporting crude oil and the centrifugal pump transporting water will have differences in design.

Corrosion: Corrosive media needs to choose corrosion-resistant materials, such as stainless steel, engineering plastics, etc., like conveying hydrochloric acid and other corrosive liquids, you need to use acid-resistant stainless steel centrifugal pump.

Paying attention to working conditions

Temperature: The high temperature medium will make the material properties of the pump change, and special cooling measures or high temperature resistant materials may be required, such as when selecting centrifugal pumps that transport high temperature steam condensate, its high temperature resistance need to be considered.

Pressure: When the working pressure is high, it is necessary to choose the pump case and seal structure that can withstand the corresponding pressure, such as the high-pressure boiler pump that can withstand higher pressure.

Considering other factors

Energy saving and efficiency: Give priority to energy-efficient centrifugal pumps, which can reduce operating costs, check the performance curve of the pump, and choose the pump type with higher efficiency near the operating point.

Reliability and maintenance: Choose products with good brand reputation and reliable quality, such as some well-known brands of centrifugal pumps, their quality and after-sales are more guaranteed. At the same time, considering the maintenance difficulty of the pump, such as whether the replacement of wearing parts is convenient.

Welcome to choose centrifugal pump products of Dalian Hongya Pump Industry. If there is any need, please provide us with more detailed information. We have professional technical personnel to choose the most suitable centrifugal pump products for you.

If you have any request, please contact us by email airtight9@dlhongya.cn，telephone or whatsapp +8613804248040 (Ellie). We will do our best to solve any problems during your work and production.

DISCLAIMER: Dalian Hongya Pump supplies replacement parts and pumps to fit a wide range of OEM pumps. Any use of OEM names, trademarks, model numbers or part numbers is for reference only.