# Tri-clamp × hose barb adapters (14MPHR style): ½ to 4 in clamp, ¼ to 4 in hose

> What tri-clamp hose barb fits ½ inch hose?

- Category: Hardware › Sanitary clamp fittings
- Kind: Standard part
- Basis: Face-to-end A per Steel & O'Brien and Dixon 14MPHR (they agree); barb OD B = hose ID + 0.040 in (Dixon); barb ridges (three, sawtooth) are a Xem Studio profile on those two numbers
- Page: https://xemstudio.com/objects/tri-clamp-hose-barb-adapters/ · JSON: https://xemstudio.com/api/geometry?object=tri-clamp-hose-barb-adapters · Plain text: https://xemstudio.com/objects/tri-clamp-hose-barb-adapters/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

- Clamp face one end, a three-ridge hose barb the other; ridges reach the published barb OD (hose ID + 0.040 in) and ramp back to the hose ID. Overall length matches the published A where the barb fits in it; otherwise the actual length is in each file note.
- ½–¾ in clamp means the 25 mm mini flange; 1–1½ in means the 50.5 mm flange.
- 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

| clamp | hose_id_in | A_in | barb_od_mm | bore_mm |
|---|---|---|---|---|
| ½–¾ | ¼ | 1.5 | 7.37 | 3.1 |
| ½–¾ | ⅜ | 1.5 | 10.54 | 6.3 |
| ½–¾ | ½ | 1.5 | 13.72 | 9.5 |
| ½–¾ | ¾ | 1.5 | 20.07 | 15.8 |
| 1–1½ | ¼ | 1.5 | 7.37 | 3.1 |
| 1–1½ | ⅜ | 1.5 | 10.54 | 6.3 |
| 1–1½ | ½ | 1.5 | 13.72 | 9.5 |
| 1–1½ | ⅝ | 1.5 | 16.89 | 12.7 |
| 1–1½ | ¾ | 1.5 | 20.07 | 15.8 |
| 1–1½ | 1 | 1.687 | 26.42 | 22.2 |
| 1–1½ | 1½ | 1.687 | 39.12 | 34.9 |
| 2 | ½ | 1.812 | 13.72 | 9.5 |
| 2 | ¾ | 1.812 | 20.07 | 15.8 |
| 2 | 1½ | 2.312 | 39.12 | 34.9 |
| 2 | 2 | 2.312 | 51.82 | 47.6 |
| 2½ | 2½ | 2.344 | 64.52 | 60.3 |
| 3 | 3 | 3.094 | 77.22 | 73.0 |
| 4 | 4 | 3.406 | 102.62 | 98.4 |

## Where the files are

- Steel & O'Brien: [14MPHR rubber hose adapter: A per clamp × barb size](https://www.steelobrien.com/products/sanitary-fittings/clamp-fittings/adapters/14mphr-rubber-hose-adapter/) — web — publisher's table; dimensions cited
- Dixon: [14MPHR brewery hose barb: A and barb OD B (hose ID + 0.040 in) per size, ½ to 6 in](https://www.cooneybrothers.com/userfiles/ad/documents/Dixon_Sanitary_14MPHRG600_Catalog.pdf) — PDF — publisher's catalogue; 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)](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 (18 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/index.json

- hose-barb-0.75in-x-0.25in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.25in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.25in.stl) — ½–¾ in clamp × ¼ in hose barb: 1.500 in face to end (published A 1.5 in), barb Ø7.37 (hose ID + 0.040 in)
- hose-barb-0.75in-x-0.375in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.375in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.375in.stl) — ½–¾ in clamp × ⅜ in hose barb: 1.500 in face to end (published A 1.5 in), barb Ø10.54 (hose ID + 0.040 in)
- hose-barb-0.75in-x-0.5in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.5in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.5in.stl) — ½–¾ in clamp × ½ in hose barb: 1.500 in face to end (published A 1.5 in), barb Ø13.72 (hose ID + 0.040 in)
- hose-barb-0.75in-x-0.75in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.75in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-0.75in-x-0.75in.stl) — ½–¾ in clamp × ¾ in hose barb: 1.837 in face to end (published A 1.5 in), barb Ø20.07 (hose ID + 0.040 in)
- hose-barb-1.5in-x-0.25in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.25in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.25in.stl) — 1–1½ in clamp × ¼ in hose barb: 1.500 in face to end (published A 1.5 in), barb Ø7.37 (hose ID + 0.040 in)
- hose-barb-1.5in-x-0.375in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.375in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.375in.stl) — 1–1½ in clamp × ⅜ in hose barb: 1.500 in face to end (published A 1.5 in), barb Ø10.54 (hose ID + 0.040 in)
- hose-barb-1.5in-x-0.5in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.5in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.5in.stl) — 1–1½ in clamp × ½ in hose barb: 1.545 in face to end (published A 1.5 in), barb Ø13.72 (hose ID + 0.040 in)
- hose-barb-1.5in-x-0.625in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.625in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.625in.stl) — 1–1½ in clamp × ⅝ in hose barb: 1.714 in face to end (published A 1.5 in), barb Ø16.89 (hose ID + 0.040 in)
- hose-barb-1.5in-x-0.75in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.75in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-0.75in.stl) — 1–1½ in clamp × ¾ in hose barb: 1.883 in face to end (published A 1.5 in), barb Ø20.07 (hose ID + 0.040 in)
- hose-barb-1.5in-x-1in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-1in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-1in.stl) — 1–1½ in clamp × 1 in hose barb: 2.051 in face to end (published A 1.687 in), barb Ø26.42 (hose ID + 0.040 in)
- hose-barb-1.5in-x-1.5in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-1.5in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-1.5in-x-1.5in.stl) — 1–1½ in clamp × 1½ in hose barb: 2.051 in face to end (published A 1.687 in), barb Ø39.12 (hose ID + 0.040 in)
- hose-barb-2in-x-0.5in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-0.5in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-0.5in.stl) — 2 in clamp × ½ in hose barb: 1.812 in face to end (published A 1.812 in), barb Ø13.72 (hose ID + 0.040 in)
- hose-barb-2in-x-0.75in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-0.75in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-0.75in.stl) — 2 in clamp × ¾ in hose barb: 1.889 in face to end (published A 1.812 in), barb Ø20.07 (hose ID + 0.040 in)
- hose-barb-2in-x-1.5in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-1.5in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-1.5in.stl) — 2 in clamp × 1½ in hose barb: 2.312 in face to end (published A 2.312 in), barb Ø39.12 (hose ID + 0.040 in)
- hose-barb-2in-x-2in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-2in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2in-x-2in.stl) — 2 in clamp × 2 in hose barb: 2.312 in face to end (published A 2.312 in), barb Ø51.82 (hose ID + 0.040 in)
- hose-barb-2.5in-x-2.5in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2.5in-x-2.5in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-2.5in-x-2.5in.stl) — 2½ in clamp × 2½ in hose barb: 2.344 in face to end (published A 2.344 in), barb Ø64.52 (hose ID + 0.040 in)
- hose-barb-3in-x-3in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-3in-x-3in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-3in-x-3in.stl) — 3 in clamp × 3 in hose barb: 3.094 in face to end (published A 3.094 in), barb Ø77.22 (hose ID + 0.040 in)
- hose-barb-4in-x-4in: [STEP](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-4in-x-4in.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-hose-barb-adapters/hose-barb-4in-x-4in.stl) — 4 in clamp × 4 in hose barb: 3.406 in face to end (published A 3.406 in), barb Ø102.62 (hose ID + 0.040 in)

## Questions

**What hose barb do brewers use on 1½ in tri-clamp?**

Usually ½ in hose: the 1½ in clamp × ½ in barb is 1.500 in (38.1 mm) from the face, barb Ø13.72.

## Fits with

- [Tri-clamp × male NPT adapters (21MP style): ½ to 4 in](https://xemstudio.com/objects/tri-clamp-male-npt-adapters/)
- [Tri-clamp × female NPT adapters (22MP style): ½ to 4 in](https://xemstudio.com/objects/tri-clamp-female-npt-adapters/)
- [Tri-clamp end caps with ports: NPT, clamp nozzle, hose barb and airlock hole, 1½ to 8 in](https://xemstudio.com/objects/tri-clamp-ported-end-caps/)