# Tri-clamp jacket shell: clamp-on sealed jacket for a 2 in tube

> Can I put a liquid or thermal-storage jacket on a tri-clamp tube?

- Category: Hardware › Stirling & thermoacoustic
- Kind: Hardware
- Basis: ASME BPE 2 in tube OD (Ø50.8); chamber volume from the drawn geometry
- Page: https://xemstudio.com/objects/tri-clamp-jacket-shell/ · JSON: https://xemstudio.com/api/geometry?object=tri-clamp-jacket-shell · Plain text: https://xemstudio.com/objects/tri-clamp-jacket-shell/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

- Two halves close on the tube OD in the same place as the finned cooler. Each half is a sealed half-annular chamber: inner wall 2 mm on the tube, chamber 10 mm, outer wall 2 mm, closed ends and a closed split wall, so each half holds its own fill (50.3 mL).
- Each half has one fill port at its top: a Ø6 port through a Ø12 × 4 boss on the outer wall, 8 mm below the top end, closed by the cap (Ø6 spigot). Fill it with the jacket standing as on the engine, port up. The fill is the builder's choice.
- The same four M4 × 30 screws and nuts as the cooler hold the halves on the tube.

## 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 |
|---|---|---|---|---|
| bore | Ø50.8 | 2 in tube OD | clamp | jacket-half-* |
| ear holes | Ø4.5 | M4 clearance (ISO 273 medium) | designed | jacket-half-* |
| fill port | Ø6 | fill-port cap spigot | press | jacket-half-* |
| cap spigot | Ø6 × 4 | fill port | press | jacket-port-cap* |

## Sizes

| part | bore_mm | length_mm | chamber_ml_per_half | port_mm |
|---|---|---|---|---|
| jacket half | 50.8 | 56.0 | 50.3 | 6.0 |
| port cap |  | 7.0 |  | 6.0 |

## Where the files are

- 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
- 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)
- Long Earth Society: [Engine builds](https://longearthsociety.com/engineering/) — web, video — LES site

## Free STEP/STL (2 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/tri-clamp-jacket-shell/index.json

- jacket-half-2in-56: [STEP](https://xemstudio.com/files/hardware/tri-clamp-jacket-shell/jacket-half-2in-56.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-jacket-shell/jacket-half-2in-56.stl) — clamp-on jacket half for the 2 in tube OD (Ø50.8 bore) × 56: inner wall 2 on the tube, closed chamber 10 wide (50.3 mL per half), outer wall 2, end walls 2, Ø6 fill port in a Ø12 × 4 boss on the outer wall 8 below the top end; ears as the finned cooler
- jacket-port-cap: [STEP](https://xemstudio.com/files/hardware/tri-clamp-jacket-shell/jacket-port-cap.step) · [STL](https://xemstudio.com/files/hardware/tri-clamp-jacket-shell/jacket-port-cap.stl) — fill-port cap: Ø12 × 3 with a Ø6 × 4 spigot

## Questions

**How much does the jacket hold?**

50.3 mL per half, 100.7 mL in all.

**Can I use it with the fins?**

Not on the same 3 in spool: both take the whole plain length. It replaces the finned cooler.

## Fits with

- [Tri-clamp finned cooler: clamp-on halves for a 2 in tube](https://xemstudio.com/objects/tri-clamp-finned-cooler/)
- [Sanitary clamp spools: 3, 6 and 12 in, ½ to 4 in](https://xemstudio.com/objects/sanitary-clamp-spools/)
- [Build list: Tri-clamp elbow diaphragm alpha, 2 in](https://xemstudio.com/objects/list-tri-clamp-elbow-diaphragm-alpha/)