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Sanitary clamp reducing tees (7RMP style), ¾ to 6 in run
What are the dimensions of a 2 × 1½ inch tri-clamp reducing tee? · Standard part · basis: Steel & O'Brien S7RMP: A run centre to face, B run face to face, C branch centre to face; ISO 2852 faces on BPE tube
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 19 in table
Notes
- Run of one size with a smaller branch: a port for a thermowell, valve or sample point without a reducer.
- Every clamp face is the ISO 2852 profile used across this site: 2.85 mm rim, flat face with the gasket groove (K 1.6 deep, R3 1.2 bottom, 23° walls, P2 0.8 edges) on C2, 20° back cone. Flange C3 / groove C2 / tube OD × wall, mm: ½–¾ in 25.0 / 20.4 (derived) / 12.7–19.05 × 1.65; 1–1½ in 50.5 / 43.5 / 25.4–38.1 × 1.65; 2 in 64.0 / 56.5 / 50.8 × 1.65; 2½ in 77.5 / 70.5 / 63.5 × 1.65; 3 in 91.0 / 83.5 / 76.2 × 1.65; 4 in 119.0 / 110.0 / 101.6 × 2.11; 6 in 166.9 (6.570 in) / 156.5 / 152.4 × 2.77; 8 in 217.7 (8.570 in) / 207.0 / 203.2 × 2.77; 10 in 268.5 / 261.0 / 254.0 × 3.40; 12 in 319.3 / 311.8 / 304.8 × 3.40.
Sizes
| size_in | run_face_to_face_mm | run_c_to_f_mm | branch_c_to_f_mm |
|---|---|---|---|
| ¾ × ½ | 127.0 | 63.5 | 63.5 |
| 1 × ½ | 133.3 | 66.7 | 66.7 |
| 1 × ¾ | 133.3 | 66.7 | 66.7 |
| 1½ × ½ | 146.0 | 73.0 | 73.0 |
| 1½ × 1 | 146.0 | 73.0 | 73.0 |
| 2 × ½ | 171.4 | 85.7 | 79.4 |
| 2 × ¾ | 171.4 | 85.7 | 79.4 |
| 2 × 1 | 171.4 | 85.7 | 79.4 |
| 2 × 1½ | 171.4 | 85.7 | 79.4 |
| 2½ × 1½ | 184.1 | 92.1 | 85.7 |
| 2½ × 2 | 184.1 | 92.1 | 85.7 |
| 3 × 1½ | 196.8 | 98.4 | 92.1 |
| 3 × 2 | 196.8 | 98.4 | 92.1 |
| 3 × 2½ | 196.8 | 98.4 | 92.1 |
| 4 × 1½ | 241.3 | 120.6 | 104.8 |
| 4 × 2 | 241.3 | 120.6 | 111.1 |
| 4 × 3 | 241.3 | 120.6 | 111.1 |
| 6 × 3 | 361.9 | 181.0 | 136.5 |
| 6 × 4 | 361.9 | 181.0 | 146.0 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Steel & O'Brien | S7RMP reducing tee, clamp ends: A, B, C per run × branch | web | publisher's table; dimensions cited |
| GW Kent | Tri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thickness | web | publisher's guide; dimensions cited |
| Rubber Fab | Tri-Clamp gasket dimensional chart: gasket ID, OD and bead diameter per size (2 in bead 2.22 in / 56.50 mm, 1.5 in 1.71 / 43.50, 3 in 3.29 / 83.50) | maker chart; dimensions are facts verify |
Free files
★ Free files 19 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| reducing-tee-0.75in-x-0.5in | ¾ × ½ in reducing tee: run 5.0 in face to face, branch 2.5 in centre to face | STEP · STL |
| reducing-tee-1in-x-0.5in | 1 × ½ in reducing tee: run 5.25 in face to face, branch 2.625 in centre to face | STEP · STL |
| reducing-tee-1in-x-0.75in | 1 × ¾ in reducing tee: run 5.25 in face to face, branch 2.625 in centre to face | STEP · STL |
| reducing-tee-1.5in-x-0.5in | 1½ × ½ in reducing tee: run 5.75 in face to face, branch 2.875 in centre to face | STEP · STL |
| reducing-tee-1.5in-x-1in | 1½ × 1 in reducing tee: run 5.75 in face to face, branch 2.875 in centre to face | STEP · STL |
| reducing-tee-2in-x-0.5in | 2 × ½ in reducing tee: run 6.75 in face to face, branch 3.125 in centre to face | STEP · STL |
| reducing-tee-2in-x-0.75in | 2 × ¾ in reducing tee: run 6.75 in face to face, branch 3.125 in centre to face | STEP · STL |
| reducing-tee-2in-x-1in | 2 × 1 in reducing tee: run 6.75 in face to face, branch 3.125 in centre to face | STEP · STL |
| reducing-tee-2in-x-1.5in | 2 × 1½ in reducing tee: run 6.75 in face to face, branch 3.125 in centre to face | STEP · STL |
| reducing-tee-2.5in-x-1.5in | 2½ × 1½ in reducing tee: run 7.25 in face to face, branch 3.375 in centre to face | STEP · STL |
| reducing-tee-2.5in-x-2in | 2½ × 2 in reducing tee: run 7.25 in face to face, branch 3.375 in centre to face | STEP · STL |
| reducing-tee-3in-x-1.5in | 3 × 1½ in reducing tee: run 7.75 in face to face, branch 3.625 in centre to face | STEP · STL |
| reducing-tee-3in-x-2in | 3 × 2 in reducing tee: run 7.75 in face to face, branch 3.625 in centre to face | STEP · STL |
| reducing-tee-3in-x-2.5in | 3 × 2½ in reducing tee: run 7.75 in face to face, branch 3.625 in centre to face | STEP · STL |
| reducing-tee-4in-x-1.5in | 4 × 1½ in reducing tee: run 9.5 in face to face, branch 4.125 in centre to face | STEP · STL |
| reducing-tee-4in-x-2in | 4 × 2 in reducing tee: run 9.5 in face to face, branch 4.375 in centre to face | STEP · STL |
| reducing-tee-4in-x-3in | 4 × 3 in reducing tee: run 9.5 in face to face, branch 4.375 in centre to face | STEP · STL |
| reducing-tee-6in-x-3in | 6 × 3 in reducing tee: run 14.25 in face to face, branch 5.375 in centre to face | STEP · STL |
| reducing-tee-6in-x-4in | 6 × 4 in reducing tee: run 14.25 in face to face, branch 5.75 in centre to face | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=sanitary-clamp-reducing-tees

Fits with
Questions
How long is a 2 × 1½ in reducing tee?
6.750 in (171.5 mm) face to face; the 1½ in branch is 3.125 in (79.4 mm) from the run centreline.

