# Sanitary clamp reducers, concentric and eccentric: 6 × 3, 6 × 4, 8 × 4 and 8 × 6 in (tri-clamp style)

> How long is a 6 × 4 inch tri-clamp reducer?

- Category: Hardware › Sanitary clamp fittings
- Kind: Hardware
- Basis: Manufacturers' published clamp-fitting tables; ISO 2852 clamp face
- Page: https://xemstudio.com/objects/sanitary-clamp-reducers-6-8in/ · JSON: https://xemstudio.com/api/geometry?object=sanitary-clamp-reducers-6-8in · Plain text: https://xemstudio.com/objects/sanitary-clamp-reducers-6-8in/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Face-to-face per Dixon 31-14MP / 32-14MP (S&O and VNE list 6 × 3 and 6 × 4 within 0.13 in). No maker lists 10 × 8 or 12 × 10 with clamp ends.
- Files: true-size STEP + STL of each fitting (no printing allowance).
- 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

| reducer | face_to_face_in |
|---|---|
| 6 × 3 in | 6.88 |
| 6 × 4 in | 7.0 |
| 8 × 4 in | 7.5 |
| 8 × 6 in | 7.75 |

## Where the files are

- Dixon Sanitary: [B31-14MP / B32-14MP clamp reducers (2023 catalog p. 692–693)](https://mexico.dixonvalve.com/sites/default/files/catalog/mexico_dixonvalve_com/2024_10/catalog%202023/DSC2023%20Page%20-%20692.pdf) — PDF — Publisher's catalog; dimensions are facts
- Steel & O'Brien: [Sanitary 2025 catalog (7MP tee and 9MP cross, p. 14–15)](https://steelobrien.com/wp-content/uploads/2025/03/Sanitary-2025-FINAL.pdf) — PDF — Publisher's catalog; dimensions are facts
- GW Kent: [Tri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thickness](https://www.gwkent.com/triclamp-guide) — web — publisher's guide; dimensions cited
- Rubber Fab: [Tri-clamp dimensions chart (ID, OD, bead per clamp size, ½ to 12 in and DIN 32676)](https://shop.andersonprocess.com/media/assets/product/documents/rubber-fab-tri-clamp-dimensions.pdf) — PDF — publisher's chart; dimensions cited, nothing copied
- 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)](https://shop.andersonprocess.com/media/assets/product/documents/rubber-fab-tri-clamp-dimensions.pdf) — PDF — maker chart; dimensions are facts (verify at link)

## Free STEP/STL (8 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/index.json

- reducer-concentric-6x3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-6x3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-6x3in.stl) — 6 × 3 in concentric clamp reducer, 6.88 in face to face
- reducer-eccentric-6x3in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-6x3in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-6x3in.stl) — 6 × 3 in eccentric clamp reducer, 6.88 in face to face, flat on one side
- reducer-concentric-6x4in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-6x4in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-6x4in.stl) — 6 × 4 in concentric clamp reducer, 7.0 in face to face
- reducer-eccentric-6x4in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-6x4in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-6x4in.stl) — 6 × 4 in eccentric clamp reducer, 7.0 in face to face, flat on one side
- reducer-concentric-8x4in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-8x4in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-8x4in.stl) — 8 × 4 in concentric clamp reducer, 7.5 in face to face
- reducer-eccentric-8x4in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-8x4in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-8x4in.stl) — 8 × 4 in eccentric clamp reducer, 7.5 in face to face, flat on one side
- reducer-concentric-8x6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-8x6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-concentric-8x6in.stl) — 8 × 6 in concentric clamp reducer, 7.75 in face to face
- reducer-eccentric-8x6in: [STEP](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-8x6in.step) · [STL](https://xemstudio.com/files/hardware/sanitary-clamp-reducers-6-8in/reducer-eccentric-8x6in.stl) — 8 × 6 in eccentric clamp reducer, 7.75 in face to face, flat on one side

## Questions

**How long is a 6 × 4 inch tri-clamp reducer?**

See the table: A is centre to face, B face to face.

## Fits with

- [Sanitary clamp 90° elbow, 6 in (2CMP style)](https://xemstudio.com/objects/sanitary-clamp-elbow-90-6in/)
- [Sanitary clamp weld ferrules, 6 and 8 in (tri-clamp style)](https://xemstudio.com/objects/sanitary-clamp-ferrules-6-8in/)
- [Two-bolt clamps for 6 and 8 in tri-clamp joints](https://xemstudio.com/objects/sanitary-clamp-clamps-6-8in/)
- [Sanitary clamp gaskets, 6 and 8 in (Type B profile)](https://xemstudio.com/objects/sanitary-clamp-gaskets-6-8in/)
- [Printable tri-clamp (45°): reducers, concentric and eccentric: 6 × 3, 6 × 4, 8 × 4 and 8 × 6 in](https://xemstudio.com/objects/printable-sanitary-clamp-reducers-6-8in/)