## How do you calculate reducer size?

OD1 = Large Size Outside Diameter (mm) OD2 = Smaller Size Outside Diameter (mm) t = Wall Thickness (mm) H = End to End Dimension (mm)…Where :

Larger Size 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
Wall Thickness mm Inch

## What is reducer size?

When the upstream pipe is larger in size, the joint is called a pipe reducer. As the flow goes from a large pipe to a ‘reduced’ pipe size. Similarly, when the upstream pipe is smaller, flow goes from a small pipe to an ‘expanded’ pipe size. Hence in this case the tapered joint is called an ‘expander’ in this case.

What is offset in eccentric reducer?

2, in eccentric reducer there is an offset in between the center lines of the bigger end and the centerline of smaller end. This offset or eccentricity will maintain a flat side either on top or on the bottom side.

### Why eccentric reducer is used in pump suction?

Eccentric reducers are used at the suction side of pumps to ensure air does not accumulate in the pipe. The gradual accumulation of air in a concentric reducer could result in a large bubble that could eventually cause the pump to stall or cause cavitation when drawn into the pump.

### How do you find the surface area of eccentric reducer?

Total surface area of a conical frustum: A = π * (r12 + r22 + (r1 + r2) * s) = π * [ r12 + r22 + (r1 + r2) * √((r1 – r2)2 + h2) ]

What is the difference between a concentric and eccentric reducer?

Concentric reducers have the shape of a cone, hence the name. Unlike eccentric reducers, concentric reducers have a common center line. Eccentric reducers are a bit different. One of their sides is straight, with one of the edges running parallel to the connecting pipe and results in the centreline being offset.

#### What is difference between concentric and eccentric reducer?

Concentric reducers reduce the pipe in the center. Eccentric reducers are used when the pipes have to maintain the same top or bottom level. Eccentric reducers are frequently used to avoid trapping air within the system, so they are often used when both air and liquids may be flowing together.

#### Where is eccentric reducer used?

How do you install eccentric reducer at pump suction?

Consider using eccentric reducers on the suction side of the pump when a pipe size transition is required. Install the flat side of the reducer on the top when fluid is coming from below the pump. If the fluid comes from the top, the flat portion of the reducer should be mounted on the bottom of the pipe.

## When to use concentric and eccentric reducer?

Concentric Reducers are used for vertical piping whereas eccentric reducer are used at Pipe rack to maintain bop and Flat side Up at Pump Suction to avoid cavity. Eccentric reducers are used to maintain the same bottom of pipe.

## What is the function of an eccentric reducer?

Keeping big pipes and small pipes together.

• Reducing noise and vibration at the same time.
• Requires less installation space.
• Absorbs pipe wall and fluid borne noise.
• Less turbulence or material entrapment.
• Eccentric reducer are used with flat side up in pump suction to avoid cavitation.
• What type of use in concentric reducer and eccentric reducer?

Reducers are usually concentric but eccentric reducers are used when required to maintain the same top-or bottom-of-pipe level . In Concentric Reducer the reduction of the pipe size is achieved by decreasing the diameter of the fitting at a constant rate over a specified length, maintaining symmetry around the fitting.

### What is an eccentric reducer?

Eccentric reducers are typically installed at the centrifugal process pump suction nozzles in order to facilitate proper transition from the the larger diameter (low flow velocity, moderate friction loss) suction piping to the pump suction nozzle.