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Sanitary clamp reducers, concentric and eccentric, ½ to 4 in (tri-clamp style, BPE)
How long is a 2 × 1½ inch sanitary clamp reducer? · Standard part · basis: ASME BPE / 3-A clamp-fitting dimensions published identically by two manufacturers; ISO 2852 face profile; drawn by Xem Studio from those numbers
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
- 13 in table
Notes
- Concentric (31-14MP) and eccentric (32-14MP) reducers with clamp faces both ends; 0.5 in of straight tube behind each face, then the cone. Eccentric reducers keep one side flat (drawn on −X): lay it flat side down so a line drains.
- Only the size pairs and lengths that both source catalogues list identically are drawn.
- Faces: ISO 2852 profile (2.85 mm rim, 1.6 mm gasket recess, 20° back cone) on the BPE flange diameters ½–¾ in 25.0, 1–1½ in 50.5, 2 in 64.0, 2½ in 77.5, 3 in 91.0, 4 in 119.0 mm; tube OD 12.7 / 19.05 / 25.4 / 38.1 / 50.8 / 63.5 / 76.2 / 101.6 mm, wall 1.65 mm (4 in: 2.11). The gasket-groove diameter on ½, ¾ and 4 in is derived (flange − 7.0 / 7.5 mm, the land width of every size ISO 2852 lists); the rest is from the standard.
Sizes
| size_in | face_to_face_mm | large_tube_od_mm | small_tube_od_mm |
|---|---|---|---|
| ¾ × ½ | 50.8 | 19.05 | 12.7 |
| 1 × ¾ | 50.8 | 25.4 | 19.05 |
| 1½ × 1 | 76.2 | 38.1 | 25.4 |
| 2 × 1 | 127.0 | 50.8 | 25.4 |
| 2 × 1½ | 76.2 | 50.8 | 38.1 |
| 2½ × 1½ | 127.0 | 63.5 | 38.1 |
| 2½ × 2 | 76.2 | 63.5 | 50.8 |
| 3 × 1½ | 177.8 | 76.2 | 38.1 |
| 3 × 2 | 127.0 | 76.2 | 50.8 |
| 3 × 2½ | 76.2 | 76.2 | 63.5 |
| 4 × 2 | 231.8 | 101.6 | 50.8 |
| 4 × 2½ | 181.0 | 101.6 | 63.5 |
| 4 × 3 | 130.2 | 101.6 | 76.2 |
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, large and small size | 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 26 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| reducer-concentric-0.75inx0.5in | ¾ × ½ in concentric reducer (31-14MP), 2.0 in face to face | STEP · STL |
| reducer-eccentric-0.75inx0.5in | ¾ × ½ in eccentric reducer (32-14MP), 2.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-1inx0.75in | 1 × ¾ in concentric reducer (31-14MP), 2.0 in face to face | STEP · STL |
| reducer-eccentric-1inx0.75in | 1 × ¾ in eccentric reducer (32-14MP), 2.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-1.5inx1in | 1½ × 1 in concentric reducer (31-14MP), 3.0 in face to face | STEP · STL |
| reducer-eccentric-1.5inx1in | 1½ × 1 in eccentric reducer (32-14MP), 3.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-2inx1in | 2 × 1 in concentric reducer (31-14MP), 5.0 in face to face | STEP · STL |
| reducer-eccentric-2inx1in | 2 × 1 in eccentric reducer (32-14MP), 5.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-2inx1.5in | 2 × 1½ in concentric reducer (31-14MP), 3.0 in face to face | STEP · STL |
| reducer-eccentric-2inx1.5in | 2 × 1½ in eccentric reducer (32-14MP), 3.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-2.5inx1.5in | 2½ × 1½ in concentric reducer (31-14MP), 5.0 in face to face | STEP · STL |
| reducer-eccentric-2.5inx1.5in | 2½ × 1½ in eccentric reducer (32-14MP), 5.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-2.5inx2in | 2½ × 2 in concentric reducer (31-14MP), 3.0 in face to face | STEP · STL |
| reducer-eccentric-2.5inx2in | 2½ × 2 in eccentric reducer (32-14MP), 3.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-3inx1.5in | 3 × 1½ in concentric reducer (31-14MP), 7.0 in face to face | STEP · STL |
| reducer-eccentric-3inx1.5in | 3 × 1½ in eccentric reducer (32-14MP), 7.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-3inx2in | 3 × 2 in concentric reducer (31-14MP), 5.0 in face to face | STEP · STL |
| reducer-eccentric-3inx2in | 3 × 2 in eccentric reducer (32-14MP), 5.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-3inx2.5in | 3 × 2½ in concentric reducer (31-14MP), 3.0 in face to face | STEP · STL |
| reducer-eccentric-3inx2.5in | 3 × 2½ in eccentric reducer (32-14MP), 3.0 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-4inx2in | 4 × 2 in concentric reducer (31-14MP), 9.125 in face to face | STEP · STL |
| reducer-eccentric-4inx2in | 4 × 2 in eccentric reducer (32-14MP), 9.125 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-4inx2.5in | 4 × 2½ in concentric reducer (31-14MP), 7.125 in face to face | STEP · STL |
| reducer-eccentric-4inx2.5in | 4 × 2½ in eccentric reducer (32-14MP), 7.125 in face to face, flat side on −X | STEP · STL |
| reducer-concentric-4inx3in | 4 × 3 in concentric reducer (31-14MP), 5.125 in face to face | STEP · STL |
| reducer-eccentric-4inx3in | 4 × 3 in eccentric reducer (32-14MP), 5.125 in face to face, flat side on −X | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=sanitary-clamp-reducers
How it fits
Connects to
Tri-clamp clamps, hot-joint gaskets and heat shieldsclamps for both sizes
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Questions
How long is a 2 × 1½ in sanitary clamp reducer?
3.0 in (76.2 mm) face to face, concentric or eccentric.
Concentric or eccentric?
Concentric keeps the centreline; eccentric keeps one side flat so a horizontal line drains or vents without a pocket.