Concentric and Eccentric Reducer

Are you trying to figure out the difference between concentric and eccentric reducers? Or what each type is used for in a piping system? In this blog post, we’ll be discussing the basics of concentric and eccentric reducers, as well as exploring their applications. We’ll examine why using these fittings when connecting pipes is important and how they help reduce stress on your piping system. So read on for what may be integral to understanding your complex piping setup!

What is Concentric and Eccentric Reducer

Concentric Reducer

A concentric reducer is a type of pipe fitting used to join pipes of different diameters. It is typically made from PVC, CPVC, stainless steel, brass or other metal alloys and is available in many sizes. The fittings have a centerline that stays at the same level throughout the pipe fitting, allowing a smooth transition between the two pipe diameters without causing turbulence or disrupting fluid flow. Concentric reducers are commonly used when transitioning from one diameter to another for various applications, such as connecting water lines to appliances and venting systems. They are also necessary for piping connections in HVAC systems where larger pipes must be joined with smaller ones due to space constraints.

Eccentric Reducer

An eccentric reducer is a type of pipe fitting used for changing the diameter of a pipe. It consists of an adapter with an eccentric cone-shaped centre that fits into another piece, such as a valve or flange. This creates two separate pipes connected at the same point with different diameters. Eccentric reducers are great for applications where space is limited because they reduce the need for two separate fittings and provide superior flow performance compared to concentric reducers. They can also be useful in situations requiring less turbulence or pressure drop across the connection, increasing efficiency and heat transfer.

Applications of Concentric and Eccentric Reducer

Concentric and eccentric reducers are parts used in piping systems to transition between two pipes of different diameters. These components, commonly found within water distribution systems, are essential for effective fluid movement within a particular system. Applying concentric and eccentric reducers is highly varied and beneficial in many industries.

The most common usage for concentric and eccentric reducers is in plumbing, specifically heating, ventilation, air-conditioning (HVAC), and potable water supply lines. This allows the pipe diameter to be changed from one size to another while maintaining water flow properties. In addition to plumbing applications, these parts can be found within industrial settings as part of process piping systems such as chemical steam or fuel oil processing systems.

Eccentric reducers should always be used when connecting horizontal pipes as they help compensate for misalignments that may occur during installation due to built-in angles inherent with the various sections of pipe lengths. They can also prevent pressure drops due to turbulence caused by sudden changes in direction, which could affect the properties of certain fluids like oil or gas depending on their characteristics, such as viscosity or density levels. When it comes to rigid materials like steel or copper piping which have limited flexibility, both types of reducer must be employed thanks to their very slim profiles, which allow them even more maneuverability than other standard fittings such as elbows or tees might provide under those same circumstances.

Concentric reducers, on the other hand, are ideal for use whenever vertical connections need changing from one size up/down due to their symmetrical design enabling easier installation relative to an eccentric fitment along straight run tubing where additional components would likely need extra equipment support frames construction etc. Hence, they tend not to be suitable options there unless necessary (plus they don’t require any manipulation). Additionally, because concentric models maintain centerline continuity, this helps keep pumps working more efficiently, leading off from depressed suction pressures at start-up, significantly boosting overall energy savings!

Overall both types are extremely valuable when added onto pipelines correctly, providing a link between differently sized tubes while allowing optimal flow throughout your entire setup – so whether you’re looking at an HVAC project needing pumped gas/water through its system, commercial kitchen needing bacteria-free soluble solutions circulating before being discharged firmly back into drainage etc.; then having good attention paid towards heat sensitivity limits plus installation angle requirements will ensure productivity runs smoothly alongside cost efficiency benefits every time!

Advantages of Concentric and Eccentric Reducer

The major advantage of concentric and eccentric reducers is their ability to regulate fluid flow and pressure in pipelines and optimize the system’s efficiency. They are also durable, long-lasting, and require low maintenance. Moreover, both these reducers are cost-effective and allow for a smooth transition between pipes, which reduces the chances of clogs and pipe blockages. The eccentric reducer’s offset design also allows for solid particles or sludge accumulation, which helps prevent pipeline blockages while ensuring steady pipeline flow.


Concentric and eccentric reducers play crucial roles in the functionality and efficiency of pipeline systems in various industries. These pipe fittings optimize fluid flow by regulating pressure, reducing flow rates, and preventing clogs and blockages. The concentric reducer is commonly used in pipes with a change in diameter, while the eccentric reducer prevents clogs in pipes carrying viscous substances and solids. The advantages of these reducers are their durability, cost-effectiveness, long-lasting performance, and easy maintenance. It is essential to understand the functions and uses of concentric and eccentric reducers to ensure the efficiency and longevity of pipeline systems.