AJS · ONE-STOP REDUCING COUPLING
Different pipe sizes. One connection.
Replace an assembly of two couplings and a reducer with one AJ730RC reducing coupling.
Check the outside diameter of each pipe, select a published combination and send a size-specific RFQ.
Download the product reference PDF ↓ 3p · 606 KB
01 / SIMPLIFY THE CONNECTION
See what changes in the connection.
This compares component arrangements; it does not imply interchangeability for every size or service. Verify pipe O.D., groove preparation, gasket, design pressure and temperature.
Simpler assembly planning
Review a single product for the size transition, reducing the connection components to prepare and handle.
Review repetitive connections
Review the preassembled configuration and installation requirements against repetitive connections on your project.
A direct path to procurement
Move from published dimensions to supporting documents and an RFQ without searching for the model again.
See the AJ730RC connection in a short film.
02 / MATCH BOTH PIPE ENDS
Match both pipe ends. Start your RFQ.
Select the actual outside diameter of each pipe. Dual nominal-size labels do not establish compatibility with every ANSI O.D. General-type couplings and unlisted combinations require separate specification review.
ENGINEERING DATA
Searchable technical data
Select Inquire to carry the product and row specifications directly into your inquiry. Copy values or export a CSV for your review.
AJ730RC · Reducing
Export full table CSV ↓%22%2C%22Max.%20working%20pressure%20(kgf%2Fcm%C2%B2)%22%2C%22A%20(mm)%22%2C%22B%20(mm)%22%2C%22C%20(mm)%22%2C%22Bolt%20%CE%A6%20%C3%97%20L%22%2C%22Wrench%20(mm)%22%2C%22Source%20PDF%20page%22%0D%0A%2232x25%20%2F%201.1%2F4x1%22%2C%2242.7x34.0%22%2C%2221%22%2C%2266%22%2C%22104.5%22%2C%2246%22%2C%22M10X55%22%2C%2217%22%2C%2210%22%0D%0A%2240x32%20%2F%201.1%2F2x1.1%2F4%22%2C%2248.6x42.7%22%2C%2221%22%2C%2271%22%2C%22111.6%22%2C%2246%22%2C%22M10X55%22%2C%2217%22%2C%2210%22%0D%0A%2250x40%20%2F%202x1.1%2F2%22%2C%2260.5x48.6%22%2C%2221%22%2C%2287%22%2C%22125%22%2C%2246%22%2C%22M10X55%22%2C%2217%22%2C%2210%22%0D%0A%2265x50%22%2C%2276.3x60.5%22%2C%2221%22%2C%22101%22%2C%22145.2%22%2C%2246%22%2C%22M10X65%22%2C%2217%22%2C%2210%22%0D%0A%222.1%2F2x2%22%2C%2273.0x60.3%22%2C%2221%22%2C%2298%22%2C%22145.2%22%2C%2246%22%2C%22M10X65%22%2C%2217%22%2C%2210%22){kind=link}
Catalog values do not establish design suitability or stock availability. Asterisks preserve source notation. Refer to the original below for drawing symbols and notes.
| Size inquiry | Nominal size DN / inch | Pipe O.D. combination (mm) | Max. working pressure (kgf/cm²) | A (mm) | B (mm) | C (mm) | Bolt Φ × L | Wrench (mm) | Source PDF page |
|---|---|---|---|---|---|---|---|---|---|
| Inquire ↗ | 32x25 / 1.1/4x1 | 42.7x34.0 | 21 | 66 | 104.5 | 46 | M10X55 | 17 | 10 |
| Inquire ↗ | 40x32 / 1.1/2x1.1/4 | 48.6x42.7 | 21 | 71 | 111.6 | 46 | M10X55 | 17 | 10 |
| Inquire ↗ | 50x40 / 2x1.1/2 | 60.5x48.6 | 21 | 87 | 125 | 46 | M10X55 | 17 | 10 |
| Inquire ↗ | 65x50 | 76.3x60.5 | 21 | 101 | 145.2 | 46 | M10X65 | 17 | 10 |
| Inquire ↗ | 2.1/2x2 | 73.0x60.3 | 21 | 98 | 145.2 | 46 | M10X65 | 17 | 10 |
5 / 5 rows2026 grooved piping catalog · original ↗
Need a current document for project submittal? Send the model, required language and submittal purpose ↗
03 / REVIEW THE EVIDENCE
Review the technical references. No registration required.
Catalog references and selection guides are not certificates or complete installation manuals. Use current documents approved for the exact model and size for project submittal and installation.
Questions before specification
Which pipe-size combinations are published?
The table below covers five published one-stop O.D. combinations. Verify the actual outside diameter of both pipes. Unlisted combinations and general-type couplings require separate specification review.
How much installation time and labor can it save?
The design replaces an assembly of two couplings and one reducer with a single reducing coupling. Actual savings depend on pipe sizes, connection count, crew and site conditions. A percentage saving is not stated without a defined comparison.
Can I obtain approvals and installation instructions?
Public references are available below without registration. For project submittals and installation instructions, provide the model, sizes, fluid and design conditions so the applicable document scope can be checked.
What is needed for pricing and delivery?
Send both pipe outside diameters, quantities, service conditions, delivery destination and required date. Typical delivery in Korea is three days, subject to stock and quantity; the committed date is confirmed in the quotation. International lead times are quoted separately.
AJ730RC / PROJECT REVIEW
Send your drawing or required sizes.
Both pipe outside diameters · quantities by size · service conditions · destination and schedule. Requirements that are not yet finalized can be reviewed with our team.
Request an AJ730RC quotation ↗Attach drawings or a material list · model prefilled · an inquiry is not a purchase order.