SKUs available on this product page

31W-3X.50-7-316, 31W-2.5X1-7-304, 31W-.75X.25-7-316, 31W-.50X.25X1-7-316-M, 31W-3X1.5-7-316, 31W-3X1.5-7-304, 31W-3X1-7-304, 31W-2.5X2-7-316, 31W-2.5X2-7-304, 31W-2.5X1.5-7-316, 31W-2.5X1.5-7-304, 31W-2X1.5-7-316, 31W-2X1.5-7-304, 31W-2X1-7-316, 31W-2X1-7-304, 31W-2X.75-7-316, 31W-2X.50-7-316, 31W-1.5X1-7-316, 31W-1.5X1-7-304, 31W-1.5X.75-7-316, 31W-1.5X.50-7-316, 31W-1X.75-7-316, 31W-8X6-7-316, 31W-8X6-7-304, 31W-8X4-7-316, 31W-8X4-7-304, 31W-8X3-7-316, 31W-8X3-7-304, 31W-6X4-7-316, 31W-6X4-7-304, 31W-6X3-7-316, 31W-6X3-7-304, 31W-6X2-7-316, 31W-6X2-7-304, 31W-4X3-7-316, 31W-4X3-7-304, 31W-4X2.5-7-316, 31W-4X2.5-7-304, 31W-4X2-7-316, 31W-4X2-7-304, 31W-4X1.5-7-316, 31W-4X1.5-7-304, 31W-4X1-7-316, 31W-4X1-7-304, 31W-3X2.5-7-316, 31W-3X2.5-7-304, 31W-3X2-7-316, 31W-3X2-7-304, 31W-3X1-7-316, 31W-1X.50-7-316, 31W-.75X.50-7-316,

Butt-Weld Polished Concentric Reducers (31W)

Quantity - +

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

Additional information

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

PDF
31W-1.5X.50-7-316

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

PDF
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

PDF
31W-1.5X1-7-316

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

PDF
31W-1X.50-7-316

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

PDF
31W-1X.75-7-316

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

PDF
31W-2.5X1-7-304

31W – CONCENTRIC BUTT WELD REDUCER –
32RA ID, 32RA OD – 2-1/2″ X 1″

Request Line Drawing
31W-2.5X1.5-7-304

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

PDF
31W-2.5X1.5-7-316

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

PDF
31W-2.5X2-7-304

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

PDF
31W-2.5X2-7-316

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

PDF
31W-2X.50-7-316

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

PDF
31W-2X.75-7-316

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

PDF
31W-2X1-7-304

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

PDF
31W-2X1-7-316

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

PDF
31W-2X1.5-7-304

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

PDF
31W-2X1.5-7-316

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

PDF
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

PDF
31W-3X1-7-316

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

PDF
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

PDF
31W-3X2-7-316

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

PDF
31W-3X2.5-7-304

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

PDF
31W-3X2.5-7-316

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

PDF
31W-4X1-7-304

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

PDF
31W-4X1-7-316

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

PDF
31W-4X1.5-7-304

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

PDF
31W-4X1.5-7-316

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

PDF
31W-4X2-7-304

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

PDF
31W-4X2-7-316

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

PDF
31W-4X2.5-7-304

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

PDF
31W-4X2.5-7-316

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

PDF
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

PDF
31W-6X3-7-316

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

PDF
31W-6X4-7-304

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

PDF
31W-6X4-7-316

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

PDF
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

PDF
31W-8X4-7-316

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

PDF
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

    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!