{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "fluidyne-output-tee",
 "name": "Fluidyne output-column tee, 1/2 in",
 "kind": "hardware",
 "category": "Stirling engines",
 "group": "Thermoacoustic & fluidyne",
 "year": null,
 "question": "What fitting tops the output column of a fluidyne engine?",
 "tags": [
  "fluidyne",
  "tee",
  "output",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "fluidyne output tee",
  "fluidyne pump column",
  "1/2 copper tee 4mm port"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/fluidyne-output-tee/",
 "sheet_txt": "https://xemstudio.com/objects/fluidyne-output-tee/sheet.txt",
 "sheet": {
  "basis": "Socket at 1/2 in copper tube OD Ø15.88; side port at the 4 mm OD tube",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "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."
  ],
  "table": {
   "columns": [
    "parameter",
    "value"
   ],
   "rows": [
    [
     "block",
     "24 × 24 × 40"
    ],
    [
     "bore",
     "Ø15.88 through"
    ],
    [
     "side port",
     "Ø4 at 20"
    ]
   ]
  }
 },
 "sheet_text": "Fluidyne output-column tee, 1/2 in — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/fluidyne-output-tee/  (CC BY 4.0)\nBasis: Socket at 1/2 in copper tube OD Ø15.88; side port at the 4 mm OD tube\nCatalog version: 2026-10-20\n\nSizes: see table below\n- 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.\n\nparameter  value\nblock  24 × 24 × 40\nbore  Ø15.88 through\nside port  Ø4 at 20\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: Fluidyne engine — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Fluidyne\n- C. D. West: Liquid Piston Stirling Engines (1983) — book, reports (OSTI) — reference / US Gov reports public domain [verify license at link] — https://www.osti.gov/search/semantic:fluidyne\n- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/fluidyne-output-tee/index.json\nAPI: https://xemstudio.com/api/geometry?object=fluidyne-output-tee\n",
 "sources": [
  {
   "publisher": "Wikipedia",
   "title": "Fluidyne engine",
   "url": "https://en.wikipedia.org/wiki/Fluidyne",
   "formats": [
    "web"
   ],
   "license": "CC BY-SA 4.0 (text)",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "C. D. West",
   "title": "Liquid Piston Stirling Engines (1983)",
   "url": "https://www.osti.gov/search/semantic:fluidyne",
   "formats": [
    "book",
    "reports (OSTI)"
   ],
   "license": "reference / US Gov reports public domain",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "Long Earth Society",
   "title": "Engine builds",
   "url": "https://longearthsociety.com/engineering/",
   "formats": [
    "web",
    "video"
   ],
   "license": "LES site",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "fluidyne-manifold-half-inch",
  "copper-pipe-type-l-m",
  "silicone-tube"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "copper-pipe-type-l-m",
     "why": "1/2 in column through the bore"
    }
   ]
  },
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "fluidyne-manifold-half-inch",
     "why": "line from the manifold"
    },
    {
     "slug": "silicone-tube",
     "why": "4 mm tube in the side port"
    }
   ]
  }
 ],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [
  {
   "feature": "leg sockets",
   "exact": "Ø15.88",
   "mates": "1/2 in copper tube OD",
   "fit": "socket",
   "files": "all"
  },
  {
   "feature": "tuning / side port",
   "exact": "Ø4",
   "mates": "4 mm OD tube",
   "fit": "press",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. Typical FDM: hole +0.0 to +0.1 mm on diameter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. Typical FDM: +0.2 mm.",
  "run": "turns or slides in use: pin in a link, rod through a guide. Typical FDM: +0.3 mm.",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. Typical FDM: +0.3 mm.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "What does the fluidyne output column do?",
   "a": "The pressure swing from the U-tube pumps the water in it; with check valves it is a pump."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "fluidyne-output-tee-1-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "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",
   "note": "output-column tee"
  }
 ],
 "markdown": "https://xemstudio.com/objects/fluidyne-output-tee/index.md"
}