Carbon Steel Eccentric Reducers
A carbon steel eccentric reducer is a butt-weld reducer with offset axes that joins two pipes of different sizes so that one edge stays level.
It is used on horizontal pump suction lines to prevent air pockets and to keep the bottom level on pipe supports. 29 sizes from 1 1/4″ × 3/4″ to 12″ × 10″ are available in SCH40.
Main Applications
- Size transitions on pump suction lines
- Horizontal lines where air pockets must be avoided
- Keeping the bottom level on supports
- Preventing condensate build-up in steam lines
- Condensate return lines
- Tank outlet lines
Technical Data
| Fitting type | Butt-weld eccentric reducer |
|---|---|
| Material | Carbon steel, grade depending on model |
| Wall thickness | SCH40 (product range) |
| Size range | 1 1/4″ × 3/4″ – 12″ × 10″ (product range) |
| Example sizes | 2″ × 1″, 3″ × 2″, 4″ × 3″, 6″ × 4″, 8″ × 6″ (product range) |
| Number of sizes | 29 (product range) |
| Connection | Butt weld |
| Working pressure | Depending on wall thickness and material grade |
Material Options
| Part | Carbon steel (standard wall) | Carbon steel (SCH40) | Stainless (AISI 304) |
|---|---|---|---|
| Body | Carbon steel, grade depending on model | Carbon steel, grade depending on model | AISI 304 stainless steel |
| Wall thickness | Pipe series standard wall (depending on model) | SCH40 | Depending on model |
| Surface | Black or oiled (depending on model) | Black or oiled (depending on model) | Uncoated stainless |
| Welding | Stick or TIG/MIG | Stick or TIG/MIG | Stainless electrode / TIG |
| Suitable media | Heating water, fire water, air | Steam, high-pressure lines | Food, chemicals, seawater |
Which material? On pump suction the flat side of the eccentric reducer is installed on top; on steam lines it goes at the bottom so condensate can drain.
Advantages
Prevents Air Pockets
- Flat top edge on pump suction
No Condensate Build-Up
- Flat bottom edge on steam lines
Support Level Kept
- Pipe bottom level does not change
29 Sizes
- Up to 12″ × 10″
Construction and Design Features
- Conical body with one flat side and offset axis
- Two weld ends of different sizes
- Ends ready for butt welding
- SCH40 wall thickness
Send the large and small size, installation orientation and quantity; we will confirm the suitable eccentric reducer from stock.
How to Choose?
- Measure both sizesDetermine the large and small pipe outside diameters.
- Determine the orientationThe flat side goes on top on pump suction and at the bottom on steam lines.
- Match the wall thicknessChoose a part matching the pipe SCH value.
- Write the sizeUse the order large × small.
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