Hastelloy® C-22® Reducers

CSI stocks concentric and eccentric reducers in Hastelloy C-22 with Tri-Clamp® or butt weld connections.

For applications that require 3-A sanitary standards or ASME-BPE standards, CSI stocks 304 and 316L Stainless Reducers for Food, Dairy, & Beverage and BPE Reducers. We also offer AL-6XN® Reducers as another corrosion-resistant option.

Length dimensions are consistent with industry standards.

Surface Finish Options
Finish CodeProduct Contact Surface

(Max Ra)*

Product Contact Surface Finish Treatment

(ID)

Non-Product Contact Surface

(Max Ra)

Non-Product Contact Surface Finish Treatment

(OD)

-PL20 µ-inch (0.5 µm)Mechanical Polish/As drawn32 µ-inch (0.8 µm)Mechanical Polish/As drawn
-732 µ-inch (0.8 µm)Mechanical Polish/As drawn32 µ-inch (0.8 µm)Mechanical Polish/As drawn
-P2525 µ-inch (0.6 µm)Electropolished**32 µ-inch (0.8 µm)Mechanical Polish/As drawn
-SFN/ASanitary Finish***/Mill FinishN/AUnpolished (Mill)
-PUN/AUnpolished (Mill)N/AUnpolished (Mill)

*20/32 µ-inch Max Ra is an approximate value and is not guaranteed. Surface finish roughness shall be physically examined for “P25” using a profilometer calibrated to standards traceable to NIST. Surface finish roughness shall NOT be subject to physical examination for “P7” or “7”.

**The interior surfaces shall be mechanically polished or as drawn to a 25 Ra µ-inch (0.8 µm) maximum finish for sizes ½” to 4” diameter (where available). The electropolishing process may increase the Ra values post electropolishing and have areas of preferential etching (e.g. frosting, shadowing, etc.). Final Ra values for electropolished tubing and fitting shall not be used as criteria of acceptance for this product.

***Sanitary Finish: Offering finish better than traditional commercial grade tube finish. Suitable for applications in sanitary/high purity hygienic industries.

Butt Weld Concentric ReducersC31-Size-Material-Finish
C-22 Material Part #

(PL Finish)

Tube OD

(in)

A

(in)

C31-0.75X0.5-C22-PL¾ x ½2.125
C31-1X0.5-C22-PL1 x ½2.500
C31-1X0.75-C22-PL1 x ¾2.125
C31-1.5X0.5-C22-PL1½ x ½2.500
C31-1.5X0.75-C22-PL1½ x ¾3.000
C31-1.5X1-C22-PL1½ x 12.500
C31-2X1-C22-PL2 x 13.375
C31-2X1.5-C22-PL2 x 1½2.500
Butt Weld Eccentric ReducersC32-Size-Material-Finish
C-22 Material Part #

(PL Finish)

Tube OD

(in)

A

(in)

C32-0.75X0.5-C22-PL¾ x ½2.125
C32-1X0.5-C22-PL1 x ½2.500
C32-1X0.75-C22-PL1 x ¾2.125
C32-1.5X0.5-C22-PL1½ x ½2.500
C32-1.5X0.75-C22-PL1½ x ¾3.000
C32-1.5X1-C22-PL1½ x 12.500
C32-2X1-C22-PL2 x 13.375
C32-2X1.5-C22-PL2 x 1½2.500
Tri-Clamp Concentric ReducersC31-14MP-Size-Material-Finish
C-22 Material Part #

(PL Finish)

Tube OD

(in)

A

(in)

C31-14MP-0.75X0.5-C22-PL¾ x ½3.125
C31-14MP-1X0.5-C22-PL1 x ½3.500
C31-14MP-1X0.75-C22-PL1 x ¾3.125
C31-14MP-1.5X0.5-C22-PL1½ x ½3.500
C31-14MP-1.5X0.75-C22-PL1 ½ x ¾4.000
C31-14MP-1.5X1-C22-PL1½ x 13.500
C31-14MP-2X1-C22-PL2 x 14.375
C31-14MP-2X1.5-C22-PL2 x 1½3.500
Tri-Clamp Eccentric ReducersC32-14MP-Size-Material-Finish
C-22 Material Part #(PL Finish)Tube OD(in)A(in)
C32-14MP-0.75X0.5-C22-PL¾ x ½3.125
C32-14MP-1X0.5-C22-PL1 x ½3.500
C32-14MP-1X0.75-C22-PL1 x ¾3.125
C32-14MP-1.5X0.5-C22-PL1½ x ½3.500
C32-14MP-1.5X0.75-C22-PL1½ x ¾4.000
C32-14MP-1.5X1-C22-PL1½ x 13.500
C32-14MP-2X1-C22-PL2 x 14.375
C32-14MP-2X1.5-C22-PL2 x 1½3.500
Tri-Clamp x Butt Weld Concentric ReducersC31M-Size-Material-Finish
C-22 Material Part #

(PL Finish)

Tube OD

(in)

A

(in)

C31M-0.75X0.5-C22-PL¾ x ½2.625
C31M-1X0.5-C22-PL1 x ½3.000
C31M-1X0.75-C22-PL1 x ¾2.625
C31M-1.5X0.75-C22-PL1½ x ¾3.500
C31M-1.5X1-C22-PL1½ x 13.000
C31M-2X1-C22-PL2 x 13.875
C31M-2X1.5-C22-PL2 x 1½3.000
Tri-Clamp x Butt Weld Eccentric ReducersC32M-Size-Material-Finish
C-22 Material Part #(PL Finish)Tube OD(in)A(in)
C32M-0.75X0.5-C22-PL¾ x ½2.625
C32M-1X0.5-C22-PL1 x ½3.000
C32M-1X0.75-C22-PL1 x ¾2.625
C32M-1.5X0.75-C22-PL1½ x ¾3.500
C32M-1.5X1-C22-PL1½ x 13.000
C32M-2X1-C22-PL2 x 13.875
C32M-2X1.5-C22-PL2 x 1½3.000
More Reducers


Typically, CSI stocks butt-weld fittings. If you're looking for a different connection, we can also provide Tri-Clamp, I-line, SMS, or DIN options. Most of our fittings are offered in standard BPE dimensions. At CSI, we stock polished fittings, and unpolished fittings are available upon request.
For 304 and 316L Stainless reducers that meet 3-A sanitary or BPE standards, visit the Reducers for Food, Dairy, & Beverage and BPE Reducers pages. CSI also offers AL-6XN® Alloy Reducers.


Still don't see what you need? Call CSI for configurations not listed or for custom fabrications.

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