# Printable tri-clamp (45°): dip-tube caps: 1½ and 2 in, ⅜ in tube 6 to 24 in long

> How do I pull liquid out of the bottom of a tri-clamp vessel from the top (3D printable)?

- Category: Hardware › Printable tri-clamp
- Kind: Hardware
- Basis: Xem Studio design: the standard solid cap with a ⅜ in (9.53 × 1.2 wall) dip tube below and a ⅜ in hose barb (14MPHR barb profile) above; printable 45° back cone
- Page: https://xemstudio.com/objects/printable-tri-clamp-dip-tube-caps/ · JSON: https://xemstudio.com/api/geometry?object=printable-tri-clamp-dip-tube-caps · Plain text: https://xemstudio.com/objects/printable-tri-clamp-dip-tube-caps/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

- 3D-printable tri-clamp: this is Xem Studio's print-friendly version of the standard sanitary fitting, drawn so it prints on an ordinary FDM or resin printer with no supports. Download the STL to print it, or the STEP to edit it. The files are true size (no printing allowance): add your own clearance in the slicer or CAD if your printer needs it.
- Transfer or sample from the bottom through the lid: push gas in another port and the liquid rises up the tube. For a 6 × 18 in vessel pick the 16 in tube (clears a dished bottom); 18 in reaches the floor.
- Left out because they are taller than a 256 mm printer: dip-tube-cap-1.5in-12in, dip-tube-cap-1.5in-16in, dip-tube-cap-1.5in-18in, dip-tube-cap-1.5in-24in, dip-tube-cap-2in-12in, dip-tube-cap-2in-16in, dip-tube-cap-2in-18in, dip-tube-cap-2in-24in (the standard page has them).
- Printable tri-clamp: the ISO 2852 face and gasket groove are exactly standard, only the back cone behind each rim is 45° instead of 20°, so no rim overhangs more than 45° from vertical in any print orientation. Join these with the 45° clamps (printable-tri-clamp-clamps) and standard Type B gaskets; a 45° clamp fits only 45° rims, so keep a run all 45°. A 45° cone turns clamp force into face force at 1 : 1 (a 20° cone at 2.7 : 1), so tighten the clamp bolts harder or use M6.
- Print orientation: straight parts face down; elbows, tees and crosses with one face down; horizontal bores bridge their top, so keep them small or add a light tree support inside.
- 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 | tube_in | tube_mm |
|---|---|---|
| 1–1½ | 6 | 152.4 |
| 1–1½ | 12 | 304.8 |
| 1–1½ | 16 | 406.4 |
| 1–1½ | 18 | 457.2 |
| 1–1½ | 24 | 609.6 |
| 2 | 6 | 152.4 |
| 2 | 12 | 304.8 |
| 2 | 16 | 406.4 |
| 2 | 18 | 457.2 |
| 2 | 24 | 609.6 |

## Where the files are

- 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
- 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 (2 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/printable-tri-clamp-dip-tube-caps/index.json

- dip-tube-cap-1.5in-6in-45: [STEP](https://xemstudio.com/files/hardware/printable-tri-clamp-dip-tube-caps/dip-tube-cap-1.5in-6in-45.step) · [STL](https://xemstudio.com/files/hardware/printable-tri-clamp-dip-tube-caps/dip-tube-cap-1.5in-6in-45.stl) — 1–1½ in cap with a ⅜ in (Ø9.53) dip tube 6 in below the face and a ⅜ in hose barb outside — printable, 45° rims
- dip-tube-cap-2in-6in-45: [STEP](https://xemstudio.com/files/hardware/printable-tri-clamp-dip-tube-caps/dip-tube-cap-2in-6in-45.step) · [STL](https://xemstudio.com/files/hardware/printable-tri-clamp-dip-tube-caps/dip-tube-cap-2in-6in-45.stl) — 2 in cap with a ⅜ in (Ø9.53) dip tube 6 in below the face and a ⅜ in hose barb outside — printable, 45° rims

## Questions

**Can I 3D print this?**

Yes. It is the 3D-printable version: every overhang is 45° or steeper, so it prints without supports, and the sealing face is standard ISO 2852, so a normal gasket and clamp fit.

**Which length for a 6 × 18 in vessel?**

16 in clears the dished bottom; use 18 in only with the round bottom.

## Fits with

- [Tri-clamp dip-tube caps: 1½ and 2 in, ⅜ in tube 6 to 24 in long](https://xemstudio.com/objects/tri-clamp-dip-tube-caps/)
- [Tri-clamp vessels with a dished or round welded bottom: 4, 6 and 8 in, 12 to 24 in deep](https://xemstudio.com/objects/tri-clamp-dished-bottom-vessels/)
- [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/)
- [Tri-clamp racking arm: 1½ in clamp body and ½ in arms, 2 to 6 in reach](https://xemstudio.com/objects/tri-clamp-racking-arms/)
- [Printable tri-clamp (45°): two-bolt clamps, ½ to 8 in](https://xemstudio.com/objects/printable-tri-clamp-clamps/)