# Fluidyne output-column tee, 1/2 in

> What fitting tops the output column of a fluidyne engine?

- Category: Stirling engines › Thermoacoustic & fluidyne
- Kind: Hardware
- Basis: Socket at 1/2 in copper tube OD Ø15.88; side port at the 4 mm OD tube
- Page: https://xemstudio.com/objects/fluidyne-output-tee/ · JSON: https://xemstudio.com/api/geometry?object=fluidyne-output-tee · Plain text: https://xemstudio.com/objects/fluidyne-output-tee/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

- A Ø4 side port 20 mm up, 12 deep, takes a 4 mm OD tube (fit: press). The pressure swing pumps the water in this column.

## 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 |
|---|---|---|---|---|
| leg sockets | Ø15.88 | 1/2 in copper tube OD | socket | all |
| tuning / side port | Ø4 | 4 mm OD tube | press | all |

## Sizes

| parameter | value |
|---|---|
| block | 24 × 24 × 40 |
| bore | Ø15.88 through |
| side port | Ø4 at 20 |

## Where the files are

- Wikipedia: [Fluidyne engine](https://en.wikipedia.org/wiki/Fluidyne) — web — CC BY-SA 4.0 (text)
- C. D. West: [Liquid Piston Stirling Engines (1983)](https://www.osti.gov/search/semantic:fluidyne) — book, reports (OSTI) — reference / US Gov reports public domain (verify at link)
- Long Earth Society: [Engine builds](https://longearthsociety.com/engineering/) — web, video — LES site

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/fluidyne-output-tee/index.json

- fluidyne-output-tee-1-2in: [STEP](https://xemstudio.com/files/hardware/fluidyne-manifold/fluidyne-output-tee-1-2in.step) · [STL](https://xemstudio.com/files/hardware/fluidyne-manifold/fluidyne-output-tee-1-2in.stl) — output-column tee

## How it fits

### Goes in or on
- [Copper pipe (ASTM B88 Type L and M), 1/4 to 2 inch](https://xemstudio.com/objects/copper-pipe-type-l-m/): 1/2 in column through the bore

### Connects to
- [Fluidyne manifold for 1/2 in copper U-tube legs](https://xemstudio.com/objects/fluidyne-manifold-half-inch/): line from the manifold
- [Silicone tube 1 × 3 to 10 × 14 mm (ID × OD)](https://xemstudio.com/objects/silicone-tube/): 4 mm tube in the side port

## Questions

**What does the fluidyne output column do?**

The pressure swing from the U-tube pumps the water in it; with check valves it is a pump.

## Fits with

- [Fluidyne manifold for 1/2 in copper U-tube legs](https://xemstudio.com/objects/fluidyne-manifold-half-inch/)
- [Copper pipe (ASTM B88 Type L and M), 1/4 to 2 inch](https://xemstudio.com/objects/copper-pipe-type-l-m/)
- [Silicone tube 1 × 3 to 10 × 14 mm (ID × OD)](https://xemstudio.com/objects/silicone-tube/)