Butt-Weld Polished Concentric Reducers (31W)
- Sanitary Butt-Weld Concentric Reducers
- Available in 304 & 316L Stainless Steel
- Meets 3-A Standards for sanitary-grade line process equipment
- Surface Finish: 32Ra [View BPE Version]
- See Unpolished Version
- View Sizes & Dimensions
Sanitary butt-weld concentric reducer connects stainless steel tubes of alternate sizes
The Polished Concentric Reducer is available in both 304 & 316L stainless steel alloys. Buttweld ends to accommodate the joining of two separate tube lines of different sizes. Stainless steel material is resistant to corrosion and can withstand high temperatures. This product is manufactured in accordance with 3A standards for process line applications including food & beverage industries.
| Size (Tube OD) |
Part Number | Dimensions | ||||||
| 304L | 316L | A | B | C | Wall | |||
| 3/4" | x | 1/2" | -- | 31W-.75X.50-7-316 | 1.000 | 0.750 | 0.500 | 0.065 |
| 1" | x | 1/2" | -- | 31W-1X.50-7-316 | 2.000 | 1.000 | 0.500 | 0.065 |
| 1 " | x | 3/4" | -- | 31W-1X.75-7-316 | 1.000 | 1.000 | 0.750 | 0.065 |
| 1-1/2" | x | 1/2" | -- | 31W-1.5X.50-7-316 | 4.000 | 1.500 | 0.500 | 0.065 |
| 1-1/2" | x | 3/4" | -- | 31W-1.5X.75-7-316 | 3.000 | 1.500 | 0.750 | 0.065 |
| 1-1/2" | x | 1 " | 31W-1.5X1-7-304 | 31W-1.5X1-7-316 | 2.000 | 1.500 | 1.000 | 0.065 |
| 2" | x | 1/2" | 31W-2X.50-7-304 | 31W-2X.50-7-316 | 6.000 | 2.000 | 0.500 | 0.065 |
| 2" | x | 3/4" | 31W-2X.75-7-304 | 31W-2X.75-7-316 | 5.000 | 2.000 | 0.750 | 0.065 |
| 2 " | x | 1 " | 31W-2X1-7-304 | 31W-2X1-7-316 | 4.000 | 2.000 | 1.000 | 0.065 |
| 2 " | x | 1-1/2" | 31W-2X1.5-7-304 | 31W-2X1.5-7-316 | 2.000 | 2.000 | 1.500 | 0.065 |
| 2-1/2" | x | 1" | 31W-2.5X1-7-304 | 31W-2.5X1-7-316 | 6.000 | 2.500 | 1.000 | 0.065 |
| 2-1/2" | x | 1-1/2" | 31W-2.5X1.5-7-304 | 31W-2.5X1.5-7-316 | 4.000 | 2.500 | 1.500 | 0.065 |
| 2-1/2" | x | 2 " | 31W-2.5X2-7-304 | 31W-2.5X2-7-316 | 2.000 | 2.500 | 2.000 | 0.065 |
| 3 " | x | 1 " | 31W-3X1-7-304 | 31W-3X1-7-316 | 8.000 | 3.000 | 1.000 | 0.065 |
| 3 " | x | 1-1/2" | 31W-3X2-7-304 | 31W-3X1.5-7-316 | 6.000 | 3.000 | 1.500 | 0.065 |
| 3 " | x | 2 " | 31W4P-300200 | 31W-3X2-7-316 | 4.000 | 3.000 | 2.000 | 0.065 |
| 3 " | x | 2-1/2" | 31W-3X2.5-7-304 | 31W-3X2.5-7-316 | 2.000 | 3.000 | 2.500 | 0.065 |
| 4 " | x | 1 " | 31W-4X1-7-304 | 31W-4X1-7-316 | 12.000 | 4.000 | 1.000 | 0.083 |
| 4 " | x | 1-1/2" | 31W-4X1.5-7-304 | 31W-4X1.5-7-316 | 10.000 | 4.000 | 1.500 | 0.083 |
| 4 " | x | 2 " | 31W-4X2-7-304 | 31W-4X2-7-316 | 8.000 | 4.000 | 2.000 | 0.083 |
| 4 " | x | 2-1/2" | 31W-4X2.5-7-304 | 31W-4X2.5-7-316 | 6.000 | 4.000 | 2.500 | 0.083 |
| 4 " | x | 3 " | 31W-4X3-7-304 | 31W-4X3-7-316 | 4.000 | 4.000 | 3.000 | 0.083 |
| 6 " | x | 2 " | 31W-6X2-7-304 | 31W-6X2-7-316 | 5.500 | 6.000 | 2.000 | 0.109 |
| 6 " | x | 3 " | 31W-6X3-7-304 | 31W-6X3-7-316 | 5.500 | 6.000 | 3.000 | 0.109 |
| 6 " | x | 4 " | 31W-6X4-7-304 | 31W-6X4-7-316 | 5.500 | 6.000 | 4.000 | 0.109 |
| 8 " | x | 3 " | 31W-8X3-7-304 | 31W-8X3-7-316 | 6.000 | 8.000 | 3.000 | 0.109 |
| 8 " | x | 4 " | 31W-8X4-7-304 | 31W-8X4-7-316 | 6.000 | 8.000 | 4.000 | 0.109 |
| 8 " | x | 6 " | 31W-8X6-7-304 | 31W-8X6-7-316 | 6.000 | 8.000 | 6.000 | 0.109 |
Additional information
Line Drawings
| SKU | Description | Line Drawing |
|---|---|---|
| 31W-.50X.25X1-7-316-M | 1/2″ x 1/4″ Concentric Reducer, 1″ OAL, 316L |
|
| 31W-.75X.25-7-316 | 3/4″ x 1/4″ Concentric Reducer, 1″ OAL, 316L |
|
| 31W-.75X.50-7-316 | 3/4″ x 1/2″ Butt-Weld Concentric Reducer, 316L |
|
| 31W-1.5X.50-7-316 | 1-1/2″ x 1/2″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-1.5X.75-7-316 | 1 1/2″ x 3/4″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-1.5X1-7-304 | 1-1/2″ x 1″ OD/ID Polished Concentric Reducer 304 |
|
| 31W-1.5X1-7-316 | 1-1/2″ x 1″ Butt-Weld Concentric Reducer, 316L |
|
| 31W-1X.50-7-316 | 1″ x 1/2″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-1X.75-7-316 | 1″ x 3/4″ Butt-Weld Concentric Reducer, 316L |
|
| 31W-2.5X1-7-304 | 31W – CONCENTRIC BUTT WELD REDUCER – |
Request Line Drawing |
| 31W-2.5X1.5-7-304 | 2-1/2″ x 1-1/2″ OD/ID Polished Concentric Reducer 304 |
|
| 31W-2.5X1.5-7-316 | 2-1/2″ x 1-1/2″ Butt-Weld Concentric Reducer, 316L |
|
| 31W-2.5X2-7-304 | 2-1/2″ x 2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-2.5X2-7-316 | 2-1/2″ x 2″ Butt-Weld Concentric Reducer, 316L |
|
| 31W-2X.50-7-316 | 2″ x 1/2″ OD/ID Concentric Reducer T316 Pol |
|
| 31W-2X.75-7-316 | 2″ x 3/4″ OD/ID Concentric Reducer T316 Pol |
|
| 31W-2X1-7-304 | 2″ x 1″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-2X1-7-316 | 2″ x 1″ OD/ID Concentric Reducer T316 Pol |
|
| 31W-2X1.5-7-304 | 2″ x 1-1/2″ OD/ID Polished Concentric Reducer 304 |
|
| 31W-2X1.5-7-316 | 2″ x 1-1/2″ OD/ID Concentric Reducer T316 Pol |
|
| 31W-3X.50-7-316 | 3″ x 1/2″ Concentric Reducer, 316L |
Request Line Drawing |
| 31W-3X1-7-304 | 3″ x 1″ OD/ID Polished Concentric Reducer 304 |
|
| 31W-3X1-7-316 | 3″ x 1″ Butt-Weld Concentric Reducer, 316L |
|
| 31W-3X1.5-7-304 | 3″ x 1-1/2″ OD/ID Concentric Reducer T304 Polished |
|
| 31W-3X1.5-7-316 | 3″ x 1-1/2″ Concentric Reducer 316L Polished |
|
| 31W-3X2-7-304 | 3″ x 2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-3X2-7-316 | 3″ x 2″ Butt-Weld Concentric Reducer, 316L |
|
| 31W-3X2.5-7-304 | 3″ x 2 1/2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-3X2.5-7-316 | 3″ x 2-1/2″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-4X1-7-304 | 4″ x 1″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-4X1-7-316 | 4″ x 1″ Butt-Weld Concentric Reducer, 10″ OAL, 316L |
|
| 31W-4X1.5-7-304 | 4″ x 1-1/2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-4X1.5-7-316 | 4″ x 1-1/2″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-4X2-7-304 | 4″ x 2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-4X2-7-316 | 4″ x 2″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-4X2.5-7-304 | 4″ x 2-1/2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-4X2.5-7-316 | 4″ x 2-1/2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-4X3-7-304 | 4″ x 3″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-4X3-7-316 | 4″ x 3″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-6X2-7-304 | 6″ x 2″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-6X2-7-316 | 6″ x 2″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-6X3-7-304 | 6″ x 3″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-6X3-7-316 | 6″ x 3″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-6X4-7-304 | 6″ x 4″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-6X4-7-316 | 6″ x 4″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-8X3-7-304 | 8″ x 3″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-8X3-7-316 | 8″ x 3″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-8X4-7-304 | 8″ x 4″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-8X4-7-316 | 8″ x 4″ Butt-Weld Concentric Reducer, 316 |
|
| 31W-8X6-7-304 | 8″ x 6″ Butt-Weld Concentric Reducer, 304 |
|
| 31W-8X6-7-316 | 8″ X 6″ Butt-Weld Concentric Reducer, 316 |
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Can you make a 5"x6" reducer. If so can you quote 2 of them for me pleas
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Q Can you make a 5"x6" reducer. If so can you quote 2 of them for me pleasA Yes, I believe we can fabricate this piece. I will send you a quote shortly.
If I want to weld one end to a one inch tube, should I purchase a 1" size or something smaller?
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Q If I want to weld one end to a one inch tube, should I purchase a 1" size or something smaller?A All sizes are measured by the Outside Diameter (OD) of the fittings. So a reducer of size 2" x 1" will have ODs of 2" on one end and 1" on the other.
32Ra. Is this for both the id and od or just one or the other, and if it is either, which side gets polished???
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Q 32Ra. Is this for both the id and od or just one or the other, and if it is either, which side ge...... Read moreA Our standard fittings are 32Ra ID/OD. Both are polished. Our BPE Fittings available would have 20 or 15Ra ID with a 32Ra OD standard.
ARE THESE REDUCERS MACHINED OR ARE THEY ROLLED AND WELDED TOGETHER
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Q ARE THESE REDUCERS MACHINED OR ARE THEY ROLLED AND WELDED TOGETHERA Reducers can be made in a variety of ways: Rolled, machined or pressed. In order to determine the manufacturing method, you would need to compare the parts with their associated Material Test Report (MTRs). The same reducer could be made differently depending on who is making it.
I need an 8 -- 2" sanitary reducer but I don't see it here. Can you guys custom fabricate this part?
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Q I need an 8 -- 2" sanitary reducer but I don't see it here. Can you guys custom fabricate this part?A Yes, Sanitary Fittings does offer custom fabrication depending upon your needs. In this case we have a couple of options. Either you can buy an 8 -- 4 and 4 -- 2 reducer whereby you can weld together or we can create this part for you by doing the same thing. The overall length of this new reducer will be around 14 - 15" inches long. You can save time and money by welding this together yourself but it's up to you and your comfort level. Please call us if you have additional questions on custom fabrication and pricing. Thanks!
