150 lb Stainless Steel Cast Reducing Couplings
150 lb Stainless Steel Cast Reducing Couplings
The product table below lists 304 and 316 stainless steel 150 lb cast reducing couplings, threaded (NPT) from 1/4" × 1/8" to 4" × 3". A dimension chart follows the table.
Get a price: the product table below lists prices; for a size, end connection or alloy that is not listed, call (800) 282-9694 or send us a message.
Our high quality 150 lb stainless steel cast reducing couplings are corrosion resistant and are available in multiple sizes to fit your stainless pipe needs.
Sizes: 1/8" - 6"
Pressure: Class 150
End Connections: Threaded - Socket Weld
Alloys: Aluminum - Carbon - Stainless
Pressure: Class 150
End Connections: Threaded - Socket Weld
Alloys: Aluminum - Carbon - Stainless
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Size | Product Type | Reducing | Pressure | End Type | Grade | Price | Quantity | ||
|---|---|---|---|---|---|---|---|---|---|
| 1/4 | Reducing Coupling | 1/8 | 150# | Threaded | 304 Stainless | $3.07 | | ||
| 1/4 | Reducing Coupling | 1/8 | 150# | Threaded | 316 Stainless | $3.46 | | ||
| 3/8 | Reducing Coupling | 1/8 | 150# | Threaded | 304 Stainless | $3.39 | | ||
| 3/8 | Reducing Coupling | 1/4 | 150# | Threaded | 316 Stainless | $3.85 | | ||
| 3/8 | Reducing Coupling | 1/8 | 150# | Threaded | 316 Stainless | $3.85 | | ||
| 3/8 | Reducing Coupling | 1/4 | 150# | Threaded | 304 Stainless | $3.39 | | ||
| 1/2 | Reducing Coupling | 3/8 | 150# | Threaded | 304 Stainless | $3.23 | | ||
| 1/2 | Reducing Coupling | 3/8 | 150# | Threaded | 316 Stainless | $4.62 | | ||
| 1/2 | Reducing Coupling | 1/4 | 150# | Threaded | 316 Stainless | $4.62 | | ||
| 1/2 | Reducing Coupling | 1/8 | 150# | Threaded | 316 Stainless | $4.62 | | ||
| 1/2 | Reducing Coupling | 1/8 | 150# | Threaded | 304 Stainless | $3.23 | | ||
| 1/2 | Reducing Coupling | 1/4 | 150# | Threaded | 304 Stainless | $3.23 | | ||
| 3/4 | Reducing Coupling | 1/8 | 150# | Threaded | 304 Stainless | $4.91 | | ||
| 3/4 | Reducing Coupling | 1/2 | 150# | Threaded | 316 Stainless | $5.93 | | ||
| 3/4 | Reducing Coupling | 3/8 | 150# | Threaded | 316 Stainless | $5.93 | | ||
| 3/4 | Reducing Coupling | 1/4 | 150# | Threaded | 316 Stainless | $5.93 | | ||
| 3/4 | Reducing Coupling | 1/8 | 150# | Threaded | 316 Stainless | $5.93 | | ||
| 3/4 | Reducing Coupling | 1/4 | 150# | Threaded | 304 Stainless | $4.91 | | ||
| 3/4 | Reducing Coupling | 3/8 | 150# | Threaded | 304 Stainless | $4.91 | | ||
| 3/4 | Reducing Coupling | 1/2 | 150# | Threaded | 304 Stainless | $4.91 | | ||
| 1 | Reducing Coupling | 3/4 | 150# | Threaded | 304 Stainless | $6.65 | | ||
| 1 | Reducing Coupling | 1/2 | 150# | Threaded | 304 Stainless | $6.65 | | ||
| 1 | Reducing Coupling | 3/8 | 150# | Threaded | 304 Stainless | $6.65 | | ||
| 1 | Reducing Coupling | 3/4 | 150# | Threaded | 316 Stainless | $9.80 | | ||
| 1 | Reducing Coupling | 1/2 | 150# | Threaded | 316 Stainless | $9.80 | |
Product Info
Our 304 and 316 150 lb stainless steel cast couplings are available in a variety of sizes to fit any piping configuration. We supply 150 lb half cast couplings and 150 lb full cast couplings. Our inventory includes: threaded full couplings, threaded half couplings, threaded reducing couplings, socket weld full couplings, socket weld half couplings and socket weld reducing couplings. We can accommodate any need with our wide-ranging and hard to find sizes. Good corrosion resistance for many applications for many industries. View our stainless steel products line card.Dimensions
Ready to ship 150 lb stainless steel cast reducing couplings. The chart below lists the dimensions of our threaded reducing couplings.
Dimensions in inches, from our data sheet. The column letters are the ones on the drawing. A dash means no value is listed.
The chart lists every size on our data sheet; 3" × 1/2", 3" × 3/4" and 4" × 1-1/4" are not in the product table (the sheet lists no dimensions for 3" × 1/2"). Call us for availability.
Scroll inside the chart to see every size.
| Size | D1 | D2 | D3 | C1 | H1 | d1 | d2 | d3 | C2 | H2 | L1 | L | I |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4" × 1/8" | 1/4" | 0.79 | 0.71 | 0.31 | 0.24 | 1/8" | 0.63 | 0.55 | 0.43 | 0.28 | 0.63 | 1.12 | 0.12 |
| 3/8" × 1/8" | 3/8" | 1.00 | 0.91 | 0.37 | 0.28 | 1/8" | 0.63 | 0.55 | 0.47 | 0.24 | 0.91 | 1.61 | 0.12 |
| 3/8" × 1/4" | 3/8" | 1.00 | 0.91 | 0.38 | 0.28 | 1/4" | 0.79 | 0.71 | 0.51 | 0.24 | 0.91 | 1.61 | 0.12 |
| 1/2" × 1/8" | 1/2" | 1.18 | 1.10 | 0.39 | 0.31 | 1/8" | 0.63 | 0.55 | 0.35 | 0.28 | 0.94 | 1.77 | 0.10 |
| 1/2" × 1/4" | 1/2" | 1.18 | 1.10 | 0.39 | 0.31 | 1/4" | 0.79 | 0.71 | 0.49 | 0.28 | 0.94 | 1.77 | 0.10 |
| 1/2" × 3/8" | 1/2" | 1.18 | 1.10 | 0.39 | 0.31 | 3/8" | 1.00 | 0.91 | 0.39 | 0.31 | 0.94 | 1.77 | 0.10 |
| 3/4" × 1/8" | 3/4" | 1.42 | 1.30 | 0.39 | 0.35 | 1/8" | 0.63 | 0.55 | 0.43 | 0.31 | 0.87 | 1.77 | 0.12 |
| 3/4" × 1/4" | 3/4" | 1.42 | 1.30 | 0.39 | 0.35 | 1/4" | 0.79 | 0.71 | 0.43 | 0.31 | 1.02 | 1.77 | 0.12 |
| 3/4" × 3/8" | 3/4" | 1.42 | 1.30 | 0.39 | 0.35 | 3/8" | 1.00 | 0.91 | 0.59 | 0.31 | 0.98 | 1.77 | 0.12 |
| 3/4" × 1/2" | 3/4" | 1.42 | 1.30 | 0.39 | 0.35 | 1/2" | 1.18 | 1.10 | 0.59 | 0.31 | 0.98 | 1.77 | 0.12 |
| 1" × 1/8" | 1" | 1.77 | 1.65 | 0.55 | 0.35 | 1/8" | 0.63 | 0.55 | 0.47 | 0.31 | 1.02 | 1.97 | 0.12 |
| 1" × 1/4" | 1" | 1.77 | 1.65 | 0.55 | 0.43 | 1/4" | 0.79 | 0.71 | 0.47 | 0.31 | 1.10 | 1.97 | 0.12 |
| 1" × 3/8" | 1" | 1.77 | 1.65 | 0.55 | 0.43 | 3/8" | 1.00 | 0.91 | 0.51 | 0.31 | 1.10 | 1.97 | 0.12 |
| 1" × 1/2" | 1" | 1.77 | 1.65 | 0.55 | 0.43 | 1/2" | 1.18 | 1.10 | 0.51 | 0.35 | 1.14 | 1.97 | 0.12 |
| 1" × 3/4" | 1" | 1.77 | 1.65 | 0.55 | 0.43 | 3/4" | 1.42 | 1.30 | 0.55 | 0.43 | 1.10 | 1.97 | 0.12 |
| 1-1/4" × 1/4" | 1-1/4" | 2.09 | 1.97 | 0.71 | 0.43 | 1/4" | 0.79 | 0.71 | 0.59 | 0.24 | 1.14 | 1.97 | 0.14 |
| 1-1/4" × 3/8" | 1-1/4" | 2.09 | 1.97 | 0.71 | 0.43 | 3/8" | 1.00 | 0.91 | 0.47 | 0.31 | 1.14 | 1.97 | 0.14 |
| 1-1/4" × 1/2" | 1-1/4" | 2.09 | 1.97 | 0.63 | 0.43 | 1/2" | 1.18 | 1.10 | 0.51 | 0.39 | 1.18 | 1.97 | 0.14 |
| 1-1/4" × 3/4" | 1-1/4" | 2.09 | 1.97 | 0.63 | 0.47 | 3/4" | 1.42 | 1.30 | 0.51 | 0.39 | 1.18 | 1.97 | 0.14 |
| 1-1/4" × 1" | 1-1/4" | 2.09 | 1.97 | 0.63 | 0.47 | 1" | 1.77 | 1.61 | 0.71 | 0.43 | 1.18 | 1.97 | 0.14 |
| 1-1/2" × 1/4" | 1-1/2" | 2.36 | 2.22 | 0.71 | 0.47 | 1/4" | 0.79 | 0.71 | 0.71 | 0.24 | 1.22 | 2.24 | 0.14 |
| 1-1/2" × 3/8" | 1-1/2" | 2.36 | 2.22 | 0.71 | 0.47 | 3/8" | 1.00 | 0.91 | 0.71 | 0.31 | 1.22 | 2.24 | 0.14 |
| 1-1/2" × 1/2" | 1-1/2" | 2.36 | 2.22 | 0.63 | 0.47 | 1/2" | 1.18 | 1.10 | 0.57 | 0.35 | 1.22 | 2.24 | 0.14 |
| 1-1/2" × 3/4" | 1-1/2" | 2.36 | 2.22 | 0.63 | 0.47 | 3/4" | 1.42 | 1.30 | 0.61 | 0.39 | 1.22 | 2.24 | 0.14 |
| 1-1/2" × 1" | 1-1/2" | 2.36 | 2.22 | 0.63 | 0.47 | 1" | 1.77 | 1.61 | 0.67 | 0.43 | 1.22 | 2.24 | 0.14 |
| 1-1/2" × 1-1/4" | 1-1/2" | 2.36 | 2.22 | 0.71 | 0.47 | 1-1/4" | 2.09 | 1.97 | 0.67 | 0.47 | 1.22 | 2.24 | 0.14 |
| 2" × 1/4" | 2" | 2.91 | 2.76 | 0.71 | 0.51 | 1/4" | 0.79 | 0.71 | 0.63 | 0.20 | 1.50 | 2.64 | 0.16 |
| 2" × 3/8" | 2" | 2.91 | 2.76 | 0.71 | 0.51 | 3/8" | 1.00 | 0.91 | 0.51 | 0.31 | 1.50 | 2.64 | 0.16 |
| 2" × 1/2" | 2" | 2.91 | 2.76 | 0.71 | 0.51 | 1/2" | 1.18 | 1.10 | 0.59 | 0.35 | 1.50 | 2.64 | 0.16 |
| 2" × 3/4" | 2" | 2.91 | 2.76 | 0.71 | 0.51 | 3/4" | 1.42 | 1.30 | 0.69 | 0.39 | 1.50 | 2.64 | 0.16 |
| 2" × 1" | 2" | 2.91 | 2.76 | 0.63 | 0.51 | 1" | 1.77 | 1.61 | 0.67 | 0.43 | 1.50 | 2.64 | 0.16 |
| 2" × 1-1/4" | 2" | 2.91 | 2.76 | 0.71 | 0.51 | 1-1/4" | 2.09 | 1.97 | 0.67 | 0.47 | 1.50 | 2.64 | 0.16 |
| 2" × 1-1/2" | 2" | 2.91 | 2.76 | 0.71 | 0.55 | 1-1/2" | 2.36 | 2.22 | 0.59 | 0.47 | 1.57 | 2.64 | 0.16 |
| 2-1/2" × 3/4" | 2-1/2" | 3.54 | 3.39 | 0.91 | 0.55 | 3/4" | 1.42 | 1.30 | 0.75 | 0.35 | 1.69 | 2.99 | 0.26 |
| 2-1/2" × 1" | 2-1/2" | 3.54 | 3.39 | 0.91 | 0.55 | 1" | 1.77 | 1.61 | 0.75 | 0.43 | 1.69 | 2.99 | 0.26 |
| 2-1/2" × 1-1/4" | 2-1/2" | 3.54 | 3.39 | 0.91 | 0.55 | 1-1/4" | 2.09 | 1.97 | 0.87 | 0.47 | 1.69 | 2.99 | 0.26 |
| 2-1/2" × 1-1/2" | 2-1/2" | 3.54 | 3.39 | 0.91 | 0.59 | 1-1/2" | 2.36 | 2.22 | 0.91 | 0.47 | 1.69 | 2.99 | 0.26 |
| 2-1/2" × 2" | 2-1/2" | 3.54 | 3.39 | 0.91 | 0.55 | 2" | 2.91 | 2.76 | 0.87 | 0.55 | 1.69 | 2.99 | 0.26 |
| 3" × 1/2" | – | – | – | – | – | – | – | – | – | – | – | – | – |
| 3" × 3/4" | 3" | 4.29 | 4.09 | 0.94 | 0.59 | 3/4" | 1.42 | 1.30 | 0.55 | 0.39 | 1.93 | 3.35 | 0.26 |
| 3" × 1" | 3" | 4.29 | 4.09 | 0.94 | 0.59 | 1" | 1.77 | 1.61 | 0.63 | 0.43 | 1.93 | 3.31 | 0.26 |
| 3" × 1-1/4" | 3" | 4.29 | 4.09 | 0.94 | 0.59 | 1-1/4" | 2.09 | 1.97 | 0.75 | 0.47 | 1.93 | 3.31 | 0.26 |
| 3" × 1-1/2" | 3" | 4.29 | 4.09 | 0.94 | 0.63 | 1-1/2" | 2.36 | 2.22 | 0.79 | 0.51 | 1.93 | 3.35 | 0.26 |
| 3" × 2" | 3" | 4.29 | 4.09 | 0.94 | 0.59 | 2" | 2.91 | 2.76 | 0.79 | 0.51 | 1.69 | 3.31 | 0.26 |
| 3" × 2-1/2" | 3" | 4.29 | 4.09 | 0.94 | 0.59 | 2-1/2" | 3.54 | 3.39 | 1.02 | 0.65 | 1.93 | 3.27 | 0.26 |
| 4" × 1" | 4" | 5.43 | 5.20 | 0.98 | 0.63 | 1" | 1.77 | 1.61 | 0.94 | 0.43 | 2.17 | 3.82 | 0.26 |
| 4" × 1-1/4" | 4" | 5.43 | 5.20 | 0.98 | 0.63 | 1-1/4" | 2.09 | 1.97 | 0.87 | 0.47 | 2.09 | 3.74 | 0.26 |
| 4" × 1-1/2" | 4" | 5.43 | 5.20 | 0.98 | 0.63 | 1-1/2" | 2.36 | 2.22 | 0.94 | 0.51 | 2.09 | 3.74 | 0.26 |
| 4" × 2" | 4" | 5.43 | 5.20 | 0.98 | 0.63 | 2" | 2.91 | 2.76 | 0.94 | 0.55 | 2.09 | 3.82 | 0.26 |
| 4" × 2-1/2" | 4" | 5.43 | 5.20 | 0.98 | 0.63 | 2-1/2" | 3.54 | 3.39 | 1.14 | 0.59 | 2.09 | 3.78 | 0.26 |
| 4" × 3" | 4" | 5.43 | 5.20 | 0.98 | 0.67 | 3" | 4.29 | 4.09 | 0.98 | 0.63 | 2.17 | 3.86 | 0.26 |
Standard Specifications
Couplings generally conform to ASA B16.3 and pipe threads conform to ASA B2.1 standard for manufacturing. View the standard specifications chart.Stainless Steel Grades
SS couplings available from Shaw Stainless. View the various grades of stainless steel.Reference Catalog
View thousands of stainless steel pipe and tubing products and various services Shaw offers. This Reference Catalog identifies stainless steel pipe couplings and other pipe fittings through specification charts and illustrations.Additional Info
A coupling connects two pieces of pipe together. 150 lb cast couplings can come threaded or socket weld. If the two pipes being connected are not the same size, one would use a cast reducing coupling. Couplings are one of the most common pipe fittings and available in a variety of different alloys.Frequently Asked Questions
What sizes of 150 lb cast reducing couplings do you carry?
The product table on this page lists 304 and 316 stainless steel 150 lb cast reducing couplings, threaded (NPT), from 1/4" × 1/8" to 4" × 3". For other sizes or alloys, call (800) 282-9694 or send us a message.
How do I read a reducing coupling size such as 1" × 1/2"?
The first number is the large end and the second the small end. In the chart, D1, D2 and D3 describe the large end and d1, d2 and d3 the small end; L is the overall length. A 1" × 1/2" reducing coupling measures 1.97" overall.
When is a reducing coupling used?
To connect two pipes that are not the same size.
How do I get a price?
Prices are listed in the product table on this page. For a size, end connection or alloy that is not listed, call (800) 282-9694 or send us a message.