{
 "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": "tri-clamp-carb-stone-caps",
 "name": "Tri-clamp carbonation stone caps: 1½ in, 4 to 16 in down tube",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Sanitary clamp fittings",
 "year": null,
 "question": "How do I mount a carbonation stone on a tri-clamp?",
 "tags": [
  "carb stone",
  "diffusion stone",
  "carbonation",
  "oxygen",
  "sanitary",
  "tri-clamp",
  "clamp fitting",
  "brewing",
  "homebrew"
 ],
 "aliases": [
  "tri clamp carb stone",
  "carbonation stone tri clamp"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 4,
 "url": "https://xemstudio.com/objects/tri-clamp-carb-stone-caps/",
 "sheet_txt": "https://xemstudio.com/objects/tri-clamp-carb-stone-caps/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design: the standard 1½ in solid cap, a ¼ in hose barb outside, a Ø6.35 down tube and a socket for a ½ in (Ø12.7) diffusion stone",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Gas in through the barb, out through the stone at the bottom: carbonating or oxygenating wort in the vessel.",
   "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."
  ],
  "table": {
   "columns": [
    "tube_in",
    "tube_mm",
    "stone"
   ],
   "rows": [
    [
     4,
     101.6,
     "½ in × 2 in stone"
    ],
    [
     6,
     152.4,
     "½ in × 2 in stone"
    ],
    [
     12,
     304.8,
     "½ in × 2 in stone"
    ],
    [
     16,
     406.4,
     "½ in × 2 in stone"
    ]
   ]
  }
 },
 "sheet_text": "Tri-clamp carbonation stone caps: 1½ in, 4 to 16 in down tube — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/tri-clamp-carb-stone-caps/  (CC BY 4.0)\nBasis: Xem Studio design: the standard 1½ in solid cap, a ¼ in hose barb outside, a Ø6.35 down tube and a socket for a ½ in (Ø12.7) diffusion stone\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Gas in through the barb, out through the stone at the bottom: carbonating or oxygenating wort in the vessel.\n- 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.\n\ntube_in  tube_mm  stone\n4  101.6  ½ in × 2 in stone\n6  152.4  ½ in × 2 in stone\n12  304.8  ½ in × 2 in stone\n16  406.4  ½ in × 2 in stone\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- GW Kent: Tri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thickness — web — publisher's guide; dimensions cited — https://www.gwkent.com/triclamp-guide\n- 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) — PDF — maker chart; dimensions are facts [verify license at link] — https://shop.andersonprocess.com/media/assets/product/documents/rubber-fab-tri-clamp-dimensions.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/index.json\nAPI: https://xemstudio.com/api/geometry?object=tri-clamp-carb-stone-caps\n",
 "sources": [
  {
   "publisher": "GW Kent",
   "title": "Tri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thickness",
   "url": "https://www.gwkent.com/triclamp-guide",
   "formats": [
    "web"
   ],
   "license": "publisher's guide; dimensions cited",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Rubber Fab",
   "title": "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)",
   "url": "https://shop.andersonprocess.com/media/assets/product/documents/rubber-fab-tri-clamp-dimensions.pdf",
   "formats": [
    "PDF"
   ],
   "license": "maker chart; dimensions are facts",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "tri-clamp-dip-tube-caps",
  "tri-clamp-dished-bottom-vessels"
 ],
 "fits": [],
 "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": [],
 "faq": [
  {
   "q": "Which length?",
   "a": "Long enough to put the stone near the bottom: 16 in for a 6 × 18 in vessel."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "carb-stone-cap-1.5in-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-4in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-4in.stl",
   "note": "1½ in cap: ¼ in barb outside, Ø6.35 tube 4 in down to a Ø12.7 × 15 socket for a ½ in diffusion stone"
  },
  {
   "file": "carb-stone-cap-1.5in-6in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-6in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-6in.stl",
   "note": "1½ in cap: ¼ in barb outside, Ø6.35 tube 6 in down to a Ø12.7 × 15 socket for a ½ in diffusion stone"
  },
  {
   "file": "carb-stone-cap-1.5in-12in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-12in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-12in.stl",
   "note": "1½ in cap: ¼ in barb outside, Ø6.35 tube 12 in down to a Ø12.7 × 15 socket for a ½ in diffusion stone"
  },
  {
   "file": "carb-stone-cap-1.5in-16in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-16in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-carb-stone-caps/carb-stone-cap-1.5in-16in.stl",
   "note": "1½ in cap: ¼ in barb outside, Ø6.35 tube 16 in down to a Ø12.7 × 15 socket for a ½ in diffusion stone"
  }
 ],
 "markdown": "https://xemstudio.com/objects/tri-clamp-carb-stone-caps/index.md"
}