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Sanitary clamp spools: 3, 6 and 12 in, ½ to 4 in
How long are tri-clamp spools and what is their bore? · Standard part · basis: ASME BPE / 3-A clamp-fitting dimensions published identically by Dixon and Steel & O'Brien; ISO 2852 face profile
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- sizes
- 8 in table
Notes
- A spool: BPE tube with an ISO 2852 face at each end, 76.2, 152.4 or 304.8 mm (3, 6, 12 in) face to face.
- Bore 9.4 / 15.75 / 22.1 / 34.8 / 47.5 / 60.2 / 72.9 / 97.38 mm for ½ to 4 in (tube OD minus two 1.65 mm walls; 2.11 at 4 in).
- Faces are the ISO 2852 profile (2.85 mm rim, 1.6 mm gasket recess, 20° back cone) on the BPE flange diameters; the groove diameter on ½, ¾ and 4 in is derived (flange − 7.0 / 7.5 mm), the rest is from the standard.
Sizes
| size_in | tube_od_mm | bore_mm | flange_od_mm | lengths_mm |
|---|---|---|---|---|
| ½ | 12.7 | 9.4 | 25.0 | 76.2 / 152.4 / 304.8 |
| ¾ | 19.05 | 15.75 | 25.0 | 76.2 / 152.4 / 304.8 |
| 1 | 25.4 | 22.1 | 50.5 | 76.2 / 152.4 / 304.8 |
| 1½ | 38.1 | 34.8 | 50.5 | 76.2 / 152.4 / 304.8 |
| 2 | 50.8 | 47.5 | 64.0 | 76.2 / 152.4 / 304.8 |
| 2½ | 63.5 | 60.2 | 77.5 | 76.2 / 152.4 / 304.8 |
| 3 | 76.2 | 72.9 | 91.0 | 76.2 / 152.4 / 304.8 |
| 4 | 101.6 | 97.38 | 119.0 | 76.2 / 152.4 / 304.8 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| clamp faces | ISO 2852 / BPE flange | clamp + Type B gasket | clamp | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| ASME | BPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall) | standard | ASME; dimensions are facts verify |
| ISO (via iTeh sample) | ISO 2852 clamp liners: face profile and flange / groove diameters | standard excerpt; dimensions are facts | |
| Dixon Sanitary | Clamp elbows, ferrules: dimension sheet | publisher's catalogue; dimensions cited, nothing copied | |
| Steel & O'Brien | Sanitary products catalog 2024 (clamp fittings dimension tables) | publisher's catalogue; dimensions cited, nothing copied |
Free files
★ Free files 24 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| spool-0.5in-3in | ½ in spool, 3 in face to face | STEP · STL |
| spool-0.5in-6in | ½ in spool, 6 in face to face | STEP · STL |
| spool-0.5in-12in | ½ in spool, 12 in face to face | STEP · STL |
| spool-0.75in-3in | ¾ in spool, 3 in face to face | STEP · STL |
| spool-0.75in-6in | ¾ in spool, 6 in face to face | STEP · STL |
| spool-0.75in-12in | ¾ in spool, 12 in face to face | STEP · STL |
| spool-1in-3in | 1 in spool, 3 in face to face | STEP · STL |
| spool-1in-6in | 1 in spool, 6 in face to face | STEP · STL |
| spool-1in-12in | 1 in spool, 12 in face to face | STEP · STL |
| spool-1.5in-3in | 1½ in spool, 3 in face to face | STEP · STL |
| spool-1.5in-6in | 1½ in spool, 6 in face to face | STEP · STL |
| spool-1.5in-12in | 1½ in spool, 12 in face to face | STEP · STL |
| spool-2in-3in | 2 in spool, 3 in face to face | STEP · STL |
| spool-2in-6in | 2 in spool, 6 in face to face | STEP · STL |
| spool-2in-12in | 2 in spool, 12 in face to face | STEP · STL |
| spool-2.5in-3in | 2½ in spool, 3 in face to face | STEP · STL |
| spool-2.5in-6in | 2½ in spool, 6 in face to face | STEP · STL |
| spool-2.5in-12in | 2½ in spool, 12 in face to face | STEP · STL |
| spool-3in-3in | 3 in spool, 3 in face to face | STEP · STL |
| spool-3in-6in | 3 in spool, 6 in face to face | STEP · STL |
| spool-3in-12in | 3 in spool, 12 in face to face | STEP · STL |
| spool-4in-3in | 4 in spool, 3 in face to face | STEP · STL |
| spool-4in-6in | 4 in spool, 6 in face to face | STEP · STL |
| spool-4in-12in | 4 in spool, 12 in face to face | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=sanitary-clamp-spools
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Questions
What is the bore of a 2 inch tri-clamp spool?
47.5 mm (50.8 OD, 1.65 wall); 34.8 at 1½ in, 72.9 at 3 in.
What lengths are the spools?
3, 6 and 12 in face to face: 76.2, 152.4 and 304.8 mm.