Butt-Weld Polished Concentric Reducers (31W)

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Description

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. Butt-Weld Concentric Reducer Dimensions
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
31W4P-075050 31W4P-100050 31W4P-100075 31W4P-1000800 31W4P-12001000 31W4P-150050 31W4P-150075 31W4P-150100 31W4P-200075 31W4P-200100 31W4P-200150 31W4P-250050 31W4P-250100 31W4P-250150 31W4P-250200 31W4P-300100 31W4P-300150 31W4P-300200 31W4P-300250 31W4P-400100 31W4P-400150 31W4P-400200 31W4P-400250 31W4P-400300 31W4P-600200 31W4P-600300 31W4P-600400 31W4P-800300 31W4P-800400 31W4P-800600 31W6P-075050 31W6P-100050 31W6P-100075 31W6P-1000800 31W6P-12001000 31W6P-150050 31W6P-150075 31W6P-150100 31W6P-200050 31W6P-200075 31W6P-200100 31W6P-200150 31W6P-250100 31W6P-250150 31W6P-250200 31W6P-300100 31W6P-300150 31W6P-300200 31W6P-300250 31W6P-350150 31W6P-400100 31W6P-400150 31W6P-400200 31W6P-400250 31W6P-400300 31W6P-600200 31W6P-600300 31W6P-600400 31W6P-800300 31W6P-800400 31W6P-800600

Line Drawings

SKUDescriptionLine Drawing
31W-.50X.25X1-7-316-M

1/2″ x 1/4″ Concentric Reducer, 1″ OAL, 316L

PDF
31W-.75X.25-7-316

3/4″ x 1/4″ Concentric Reducer, 1″ OAL, 316L

PDF
31W-.75X.50-7-316

3/4″ x 1/2″ Butt-Weld Concentric Reducer, 316L

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31W-1.5X.50-7-316

1-1/2″ x 1/2″ Butt-Weld Concentric Reducer, 316

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31W-1.5X.75-7-316

1 1/2″ x 3/4″ Butt-Weld Concentric Reducer, 316

PDF
31W-1.5X1-7-304

1-1/2″ x 1″ OD/ID Polished Concentric Reducer 304

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31W-1.5X1-7-316

1-1/2″ x 1″ Butt-Weld Concentric Reducer, 316L

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31W-1X.50-7-316

1″ x 1/2″ Butt-Weld Concentric Reducer, 316

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31W-1X.75-7-316

1″ x 3/4″ Butt-Weld Concentric Reducer, 316L

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31W-2.5X1.5-7-304

2-1/2″ x 1-1/2″ OD/ID Polished Concentric Reducer 304

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31W-2.5X1.5-7-316

2-1/2″ x 1-1/2″ Butt-Weld Concentric Reducer, 316L

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31W-2.5X2-7-304

2-1/2″ x 2″ Butt-Weld Concentric Reducer, 304

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31W-2.5X2-7-316

2-1/2″ x 2″ Butt-Weld Concentric Reducer, 316L

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31W-2X.50-7-316

2″ x 1/2″ OD/ID Concentric Reducer T316 Pol

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31W-2X.75-7-316

2″ x 3/4″ OD/ID Concentric Reducer T316 Pol

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31W-2X1-7-304

2″ x 1″ Butt-Weld Concentric Reducer, 304

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31W-2X1-7-316

2″ x 1″ OD/ID Concentric Reducer T316 Pol

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31W-2X1.5-7-304

2″ x 1-1/2″ OD/ID Polished Concentric Reducer 304

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31W-2X1.5-7-316

2″ x 1-1/2″ OD/ID Concentric Reducer T316 Pol

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31W-3X1-7-304

3″ x 1″ OD/ID Polished Concentric Reducer 304

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31W-3X1-7-316

3″ x 1″ Butt-Weld Concentric Reducer, 316L

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31W-3X1.5-7-304

3″ x 1-1/2″ OD/ID Concentric Reducer T304 Polished

PDF
31W-3X1.5-7-316

3″ x 1-1/2″ Concentric Reducer 316L Polished

PDF
31W-3X2-7-304

3″ x 2″ Butt-Weld Concentric Reducer, 304

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31W-3X2-7-316

3″ x 2″ Butt-Weld Concentric Reducer, 316L

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31W-3X2.5-7-304

3″ x 2 1/2″ Butt-Weld Concentric Reducer, 304

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31W-3X2.5-7-316

3″ x 2-1/2″ Butt-Weld Concentric Reducer, 316

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31W-4X1-7-304

4″ x 1″ Butt-Weld Concentric Reducer, 304

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31W-4X1-7-316

4″ x 1″ Butt-Weld Concentric Reducer, 10″ OAL, 316L

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31W-4X1.5-7-304

4″ x 1-1/2″ Butt-Weld Concentric Reducer, 304

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31W-4X1.5-7-316

4″ x 1-1/2″ Butt-Weld Concentric Reducer, 316

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31W-4X2-7-304

4″ x 2″ Butt-Weld Concentric Reducer, 304

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31W-4X2-7-316

4″ x 2″ Butt-Weld Concentric Reducer, 316

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31W-4X2.5-7-304

4″ x 2-1/2″ Butt-Weld Concentric Reducer, 304

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31W-4X2.5-7-316

4″ x 2-1/2″ Butt-Weld Concentric Reducer, 304

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31W-4X3-7-304

4″ x 3″ Butt-Weld Concentric Reducer, 304

PDF
31W-4X3-7-316

4″ x 3″ Butt-Weld Concentric Reducer, 304

PDF
31W-6X2-7-304

6″ x 2″ Butt-Weld Concentric Reducer, 304

PDF
31W-6X2-7-316

6″ x 2″ Butt-Weld Concentric Reducer, 316

PDF
31W-6X3-7-304

6″ x 3″ Butt-Weld Concentric Reducer, 304

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31W-6X3-7-316

6″ x 3″ Butt-Weld Concentric Reducer, 316

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31W-6X4-7-304

6″ x 4″ Butt-Weld Concentric Reducer, 304

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31W-6X4-7-316

6″ x 4″ Butt-Weld Concentric Reducer, 316

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31W-8X3-7-304

8″ x 3″ Butt-Weld Concentric Reducer, 304

PDF
31W-8X3-7-316

8″ x 3″ Butt-Weld Concentric Reducer, 316

PDF
31W-8X4-7-304

8″ x 4″ Butt-Weld Concentric Reducer, 304

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31W-8X4-7-316

8″ x 4″ Butt-Weld Concentric Reducer, 316

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31W-8X6-7-304

8″ x 6″ Butt-Weld Concentric Reducer, 304

PDF
31W-8X6-7-316

8″ X 6″ Butt-Weld Concentric Reducer, 316

PDF

Reviews

Questions & Answers 5

    Can you make a 5"x6" reducer. If so can you quote 2 of them for me pleas
  1. Q Can you make a 5"x6" reducer. If so can you quote 2 of them for me pleas
    A Yes, I believe we can fabricate this piece. I will send you a quote shortly.
  2. If I want to weld one end to a one inch tube, should I purchase a 1" size or something smaller?
  3. 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.
  4. 32Ra. Is this for both the id and od or just one or the other, and if it is either, which side gets polished???
  5. 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 more
    A 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.
  6. ARE THESE REDUCERS MACHINED OR ARE THEY ROLLED AND WELDED TOGETHER
  7. Q ARE THESE REDUCERS MACHINED OR ARE THEY ROLLED AND WELDED TOGETHER
    A 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.
  8. I need an 8 -- 2" sanitary reducer but I don't see it here. Can you guys custom fabricate this part?
  9. 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!

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