Difference between concentric elbows and eccentric elbows in water pumps

The role and classification of elbows in water pump pipes:

The water pump system usually includes three parts: the water inlet pipe, the water pump, and the water outlet pipe. There are some pipe elbows in the inlet and outlet pipes to change the flow direction of the pipeline, so that the entire system can operate more stably and efficiently. According to the shape and position of the elbow, it can generally be divided into two categories, namely concentric elbows and eccentric elbows.

Features and applicable scenarios:

1. Concentric elbows
The concentric elbows are concentric ring-shaped, and the resistance when the fluid flows through is small. It can reduce the liquid resistance of the water pump system and increase the flow rate of the pipeline. Therefore, in some water pump systems with high flow requirements, concentric elbows are often more common components. In addition, because concentric elbows can reduce the rotation and eddy current of the liquid, and can also effectively prevent the blockage and damage of the liquid, concentric elbows are widely used in water pump systems in the fields of chemical industry, metallurgy, petrochemical, cleaning, etc.

2. Eccentric elbow
The structure of the eccentric elbow is eccentric, and the resistance is relatively large, but it has a certain effect of preventing water backflow, which is more common in low-flow and high-lift water pump systems. Since reverse flow or reverse pressure often occurs in water pump systems with high lift or low flow, if a concentric elbow is used, a short circuit of liquid reflux will be formed, affecting the working efficiency and safe operation of the pipeline, so an eccentric elbow is needed for control.

Comparison between concentric elbow and eccentric elbow:
There are obvious differences in structure between concentric elbow and eccentric elbow. The concentric elbow is in the shape of concentric rings and has low resistance, which is suitable for high-flow water pump systems; while the eccentric elbow is in an eccentric shape and has relatively large resistance, which is suitable for low-flow and high-lift water pump systems. In actual use, it is necessary to select according to the specific requirements and process characteristics of the water pump system.

Conclusion:

Water pump concentric elbow and eccentric elbow are two common pipe elbows in water pump systems. Concentric elbows are suitable for high flow systems, and eccentric elbows are suitable for low flow and high head systems. When choosing, you should choose the appropriate pump elbow according to the specific system requirements.

Read more: Material selection of pipe elbows or Long radius elbow vs Short radius elbow