# Sanitary clamp caps, ferrules, spools and gaskets, ½ to 4 in (tri-clamp style, BPE)

> What are the flange and tube dimensions of each tri-clamp size?

- Category: Hardware › Sanitary clamp fittings
- Kind: 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
- Page: https://xemstudio.com/objects/sanitary-clamp-caps-ferrules-spools/ · JSON: https://xemstudio.com/api/geometry?object=sanitary-clamp-caps-ferrules-spools · Plain text: https://xemstudio.com/objects/sanitary-clamp-caps-ferrules-spools/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses

**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.

## Notes

- One size table for every sanitary clamp size from ½ to 4 in: tube OD and wall, bore, flange OD, gasket groove, and cap thickness. Caps (16AMP) are per flange size: one cap closes both ½ and ¾ in (25.0 mm), and one closes both 1 and 1½ in (50.5 mm).
- Ferrules come 0.5 in (short) and 1.125 in (medium) long; spools 3, 6 and 12 in face to face.
- 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.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| clamp faces | ISO 2852 / BPE flange | clamp + Type B gasket | clamp | all |
| gasket bead in the face recess | groove Ø per size | two ferrule faces | designed | gasket-* |

## Sizes

| size_in | tube_od_mm | wall_mm | bore_mm | flange_od_mm | groove_mm | groove_source | cap_mm |
|---|---|---|---|---|---|---|---|
| ½ | 12.7 | 1.65 | 9.4 | 25.0 | 18.0 | derived | 4.78 |
| ¾ | 19.05 | 1.65 | 15.75 | 25.0 | 18.0 | derived | 4.78 |
| 1 | 25.4 | 1.65 | 22.1 | 50.5 | 43.5 | ISO 2852 | 6.35 |
| 1½ | 38.1 | 1.65 | 34.8 | 50.5 | 43.5 | ISO 2852 | 6.35 |
| 2 | 50.8 | 1.65 | 47.5 | 64.0 | 56.5 | ISO 2852 | 6.35 |
| 2½ | 63.5 | 1.65 | 60.2 | 77.5 | 70.5 | ISO 2852 | 6.35 |
| 3 | 76.2 | 1.65 | 72.9 | 91.0 | 83.5 | ISO 2852 | 6.35 |
| 4 | 101.6 | 2.11 | 97.38 | 119.0 | 111.5 | derived | 7.92 |

## Where the files are

- ASME: [BPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall)](https://www.asme.org/codes-standards/find-codes-standards/bpe-bioprocessing-equipment) — standard — ASME; dimensions are facts (verify at link)
- ISO (via iTeh sample): [ISO 2852 clamp liners: face profile and flange / groove diameters](https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf) — PDF — standard excerpt; dimensions are facts
- Dixon Sanitary: [Clamp elbows, ferrules: dimension sheet](https://dixonvalve.com/en/media/1397776) — PDF — publisher's catalogue; dimensions cited, nothing copied
- Steel & O'Brien: [Sanitary products catalog 2024 (clamp fittings dimension tables)](https://www.steelobrien.com/wp-content/uploads/2024/03/Sanitary-2024-FINAL.pdf) — PDF — publisher's catalogue; dimensions cited, nothing copied

## Free STEP/STL (54 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/index.json

- cap-0.5–0.75in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-0.5–0.75in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-0.5–0.75in.stl) — solid end cap (16AMP) for 0.5–0.75 in: Ø25 × 4.78 mm
- cap-1–1.5in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-1–1.5in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-1–1.5in.stl) — solid end cap (16AMP) for 1–1.5 in: Ø50.5 × 6.35 mm
- cap-2in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-2in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-2in.stl) — solid end cap (16AMP) for 2 in: Ø64 × 6.35 mm
- cap-2.5in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-2.5in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-2.5in.stl) — solid end cap (16AMP) for 2.5 in: Ø77.5 × 6.35 mm
- cap-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-3in.stl) — solid end cap (16AMP) for 3 in: Ø91 × 6.35 mm
- cap-4in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-4in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/cap-4in.stl) — solid end cap (16AMP) for 4 in: Ø119 × 7.92 mm
- ferrule-0.5in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.5in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.5in-12.7mm.stl) — ½ in short weld ferrule (14WMP), 0.5 in long
- ferrule-0.5in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.5in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.5in-28.6mm.stl) — ½ in medium weld ferrule (L14AM7), 1.125 in long
- spool-0.5in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.5in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.5in-3in.stl) — ½ in spool, 3 in face to face
- spool-0.5in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.5in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.5in-6in.stl) — ½ in spool, 6 in face to face
- spool-0.5in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.5in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.5in-12in.stl) — ½ in spool, 12 in face to face
- gasket-0.5in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-0.5in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-0.5in.stl) — ½ in Type B gasket (ISO 2852 profile)
- ferrule-0.75in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.75in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.75in-12.7mm.stl) — ¾ in short weld ferrule (14WMP), 0.5 in long
- ferrule-0.75in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.75in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-0.75in-28.6mm.stl) — ¾ in medium weld ferrule (L14AM7), 1.125 in long
- spool-0.75in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.75in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.75in-3in.stl) — ¾ in spool, 3 in face to face
- spool-0.75in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.75in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.75in-6in.stl) — ¾ in spool, 6 in face to face
- spool-0.75in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.75in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-0.75in-12in.stl) — ¾ in spool, 12 in face to face
- gasket-0.75in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-0.75in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-0.75in.stl) — ¾ in Type B gasket (ISO 2852 profile)
- ferrule-1in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1in-12.7mm.stl) — 1 in short weld ferrule (14WMP), 0.5 in long
- ferrule-1in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1in-28.6mm.stl) — 1 in medium weld ferrule (L14AM7), 1.125 in long
- spool-1in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1in-3in.stl) — 1 in spool, 3 in face to face
- spool-1in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1in-6in.stl) — 1 in spool, 6 in face to face
- spool-1in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1in-12in.stl) — 1 in spool, 12 in face to face
- gasket-1in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-1in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-1in.stl) — 1 in Type B gasket (ISO 2852 profile)
- ferrule-1.5in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1.5in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1.5in-12.7mm.stl) — 1½ in short weld ferrule (14WMP), 0.5 in long
- ferrule-1.5in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1.5in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-1.5in-28.6mm.stl) — 1½ in medium weld ferrule (L14AM7), 1.125 in long
- spool-1.5in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1.5in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1.5in-3in.stl) — 1½ in spool, 3 in face to face
- spool-1.5in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1.5in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1.5in-6in.stl) — 1½ in spool, 6 in face to face
- spool-1.5in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1.5in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-1.5in-12in.stl) — 1½ in spool, 12 in face to face
- gasket-1.5in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-1.5in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-1.5in.stl) — 1½ in Type B gasket (ISO 2852 profile)
- ferrule-2in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2in-12.7mm.stl) — 2 in short weld ferrule (14WMP), 0.5 in long
- ferrule-2in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2in-28.6mm.stl) — 2 in medium weld ferrule (L14AM7), 1.125 in long
- spool-2in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2in-3in.stl) — 2 in spool, 3 in face to face
- spool-2in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2in-6in.stl) — 2 in spool, 6 in face to face
- spool-2in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2in-12in.stl) — 2 in spool, 12 in face to face
- gasket-2in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-2in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-2in.stl) — 2 in Type B gasket (ISO 2852 profile)
- ferrule-2.5in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2.5in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2.5in-12.7mm.stl) — 2½ in short weld ferrule (14WMP), 0.5 in long
- ferrule-2.5in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2.5in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-2.5in-28.6mm.stl) — 2½ in medium weld ferrule (L14AM7), 1.125 in long
- spool-2.5in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2.5in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2.5in-3in.stl) — 2½ in spool, 3 in face to face
- spool-2.5in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2.5in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2.5in-6in.stl) — 2½ in spool, 6 in face to face
- spool-2.5in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2.5in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-2.5in-12in.stl) — 2½ in spool, 12 in face to face
- gasket-2.5in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-2.5in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-2.5in.stl) — 2½ in Type B gasket (ISO 2852 profile)
- ferrule-3in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-3in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-3in-12.7mm.stl) — 3 in short weld ferrule (14WMP), 0.5 in long
- ferrule-3in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-3in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-3in-28.6mm.stl) — 3 in medium weld ferrule (L14AM7), 1.125 in long
- spool-3in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-3in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-3in-3in.stl) — 3 in spool, 3 in face to face
- spool-3in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-3in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-3in-6in.stl) — 3 in spool, 6 in face to face
- spool-3in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-3in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-3in-12in.stl) — 3 in spool, 12 in face to face
- gasket-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-3in.stl) — 3 in Type B gasket (ISO 2852 profile)
- ferrule-4in-12.7mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-4in-12.7mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-4in-12.7mm.stl) — 4 in short weld ferrule (14WMP), 0.5 in long
- ferrule-4in-28.6mm: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-4in-28.6mm.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/ferrule-4in-28.6mm.stl) — 4 in medium weld ferrule (L14AM7), 1.125 in long
- spool-4in-3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-4in-3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-4in-3in.stl) — 4 in spool, 3 in face to face
- spool-4in-6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-4in-6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-4in-6in.stl) — 4 in spool, 6 in face to face
- spool-4in-12in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-4in-12in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/spool-4in-12in.stl) — 4 in spool, 12 in face to face
- gasket-4in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-4in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-caps-ferrules-spools/gasket-4in.stl) — 4 in Type B gasket (ISO 2852 profile)

## How it fits

### Connects to
- [Tri-clamp clamps (printable two-bolt), hot-joint gaskets and heat shields: every flange size, ½ to 4 in](https://xemstudio.com/objects/tri-clamp-clamps/): clamp per joint
- [Sanitary clamp elbows, 90° and 45°, ½ to 4 in (tri-clamp style, BPE)](https://xemstudio.com/objects/sanitary-clamp-elbows/): fittings
- [Sanitary clamp tees, short-outlet tees and crosses, ½ to 4 in (tri-clamp style, BPE)](https://xemstudio.com/objects/sanitary-clamp-tees-crosses/): fittings
- [Sanitary clamp reducers, concentric and eccentric, ½ to 4 in (tri-clamp style, BPE)](https://xemstudio.com/objects/sanitary-clamp-reducers/): size changes

### Alternatives
- [Tri-clamp spool (two ferrules on a tube), 1.5 and 2 inch](https://xemstudio.com/objects/tri-clamp-spool/): the original 1½ / 2 in spools
- [Tri-clamp (Tri-Clover) sanitary ferrule, 1/2 to 4 inch](https://xemstudio.com/objects/tri-clamp-ferrule/): the original 1–3 in ferrules

## Questions

**What is the flange diameter of a 2 in tri-clamp?**

64.0 mm (2.516 in); 1 and 1½ in share 50.5 mm, ½ and ¾ in share the 25.0 mm mini flange, 2½ in is 77.5, 3 in 91.0, 4 in 119.0.

**Is a 1½ in tri-clamp the same as a 1 in?**

Same 50.5 mm flange and clamp, different tube: 38.1 vs 25.4 mm OD.

**What is the wall of sanitary tube?**

0.065 in (1.65 mm, 16 ga) from ½ to 3 in; 0.083 in (2.11 mm) at 4 in.

## Fits with

- [Tri-clamp (Tri-Clover) sanitary ferrule, 1/2 to 4 inch](https://xemstudio.com/objects/tri-clamp-ferrule/)
- [Tri-clamp spool (two ferrules on a tube), 1.5 and 2 inch](https://xemstudio.com/objects/tri-clamp-spool/)
- [Tri-clamp end cap and gasket, 1.5 and 2 inch](https://xemstudio.com/objects/tri-clamp-end-cap/)
- [Tri-clamp clamps (printable two-bolt), hot-joint gaskets and heat shields: every flange size, ½ to 4 in](https://xemstudio.com/objects/tri-clamp-clamps/)
- [Sanitary clamp elbows, 90° and 45°, ½ to 4 in (tri-clamp style, BPE)](https://xemstudio.com/objects/sanitary-clamp-elbows/)
- [Sanitary clamp tees, short-outlet tees and crosses, ½ to 4 in (tri-clamp style, BPE)](https://xemstudio.com/objects/sanitary-clamp-tees-crosses/)
- [Sanitary clamp reducers, concentric and eccentric, ½ to 4 in (tri-clamp style, BPE)](https://xemstudio.com/objects/sanitary-clamp-reducers/)
- [Sanitary clamp header manifolds: 1½, 2 and 3 in headers with 3 to 5 outlets (tri-clamp style)](https://xemstudio.com/objects/sanitary-clamp-manifolds/)