{
 "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-butterfly-valves",
 "name": "Tri-clamp butterfly valves, printable: 1½ to 4 in",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Sanitary clamp fittings",
 "year": null,
 "question": "Can I 3D print a tri-clamp butterfly valve?",
 "tags": [
  "butterfly valve",
  "valve",
  "shut off",
  "sanitary",
  "tri-clamp",
  "clamp fitting",
  "brewing",
  "homebrew"
 ],
 "aliases": [
  "tri clamp butterfly valve",
  "3d printed butterfly valve",
  "1.5 tri clamp valve",
  "sanitary butterfly valve stl"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 25,
 "url": "https://xemstudio.com/objects/tri-clamp-butterfly-valves/",
 "sheet_txt": "https://xemstudio.com/objects/tri-clamp-butterfly-valves/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design: two bolted body halves with ISO 2852 clamp faces, a flexible seat ring clamped between them, a full-bore disc on a Ø6 D-flat stem, a lever",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Face to face 44 mm for every size: each half is the clamp face and its 14 mm neck (room for the clamp) plus an 8 mm body; the seat ring sits in counterbores in both halves.",
   "The disc is drawn at the bore; it seals by squeezing the flexible seat. Quarter turn: lever along the line is open.",
   "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": [
    "size_in",
    "face_to_face_mm",
    "body_od_mm",
    "bore_mm",
    "bolts"
   ],
   "rows": [
    [
     "1.5",
     44,
     74.5,
     34.8,
     "4 × M5"
    ],
    [
     "2",
     44,
     88,
     47.5,
     "4 × M5"
    ],
    [
     "2.5",
     44,
     101.5,
     60.2,
     "4 × M5"
    ],
    [
     "3",
     44,
     115,
     72.9,
     "4 × M5"
    ],
    [
     "4",
     44,
     143,
     97.38,
     "4 × M5"
    ]
   ]
  }
 },
 "sheet_text": "Tri-clamp butterfly valves, printable: 1½ to 4 in — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/tri-clamp-butterfly-valves/  (CC BY 4.0)\nBasis: Xem Studio design: two bolted body halves with ISO 2852 clamp faces, a flexible seat ring clamped between them, a full-bore disc on a Ø6 D-flat stem, a lever\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Face to face 44 mm for every size: each half is the clamp face and its 14 mm neck (room for the clamp) plus an 8 mm body; the seat ring sits in counterbores in both halves.\n- The disc is drawn at the bore; it seals by squeezing the flexible seat. Quarter turn: lever along the line is open.\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\nsize_in  face_to_face_mm  body_od_mm  bore_mm  bolts\n1.5  44.0  74.5  34.8  4 × M5\n2  44.0  88.0  47.5  4 × M5\n2.5  44.0  101.5  60.2  4 × M5\n3  44.0  115.0  72.9  4 × M5\n4  44.0  143.0  97.38  4 × M5\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, 25 parts): https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/index.json\nAPI: https://xemstudio.com/api/geometry?object=tri-clamp-butterfly-valves\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-hose-barb-adapters",
  "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": "What holds it together?",
   "a": "Four M5 bolts through both body halves; the clamp faces then go into the line with standard clamps and gaskets."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "butterfly-body-half-1.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-1.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-1.5in.stl",
   "note": "1.5 in body half (two per valve): clamp face, Ø74 body, seat counterbore, half the Ø6.4 stem bore, four M5 holes on r 31.2"
  },
  {
   "file": "butterfly-seat-1.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-1.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-1.5in.stl",
   "note": "1.5 in seat ring Ø46.8 × Ø34.80 × 3 with the stem holes (flexible material)"
  },
  {
   "file": "butterfly-disc-1.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-1.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-1.5in.stl",
   "note": "1.5 in disc Ø34.80 (= the bore) × 4 on a D-flat Ø6 stem bore"
  },
  {
   "file": "butterfly-stem-1.5in",
   "formats": [
    "step",
    "stl"
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-1.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-1.5in.stl",
   "note": "1.5 in stem Ø6 × 114 with a 1.0 D-flat"
  },
  {
   "file": "butterfly-handle-1.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-1.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-1.5in.stl",
   "note": "1.5 in lever 119 long with a D-flat bore"
  },
  {
   "file": "butterfly-body-half-2in",
   "formats": [
    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-2in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-2in.stl",
   "note": "2 in body half (two per valve): clamp face, Ø88 body, seat counterbore, half the Ø6.4 stem bore, four M5 holes on r 38.0"
  },
  {
   "file": "butterfly-seat-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-2in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-2in.stl",
   "note": "2 in seat ring Ø59.5 × Ø47.50 × 3 with the stem holes (flexible material)"
  },
  {
   "file": "butterfly-disc-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-2in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-2in.stl",
   "note": "2 in disc Ø47.50 (= the bore) × 4 on a D-flat Ø6 stem bore"
  },
  {
   "file": "butterfly-stem-2in",
   "formats": [
    "step",
    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-2in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-2in.stl",
   "note": "2 in stem Ø6 × 128 with a 1.0 D-flat"
  },
  {
   "file": "butterfly-handle-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-2in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-2in.stl",
   "note": "2 in lever 141 long with a D-flat bore"
  },
  {
   "file": "butterfly-body-half-2.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-2.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-2.5in.stl",
   "note": "2.5 in body half (two per valve): clamp face, Ø102 body, seat counterbore, half the Ø6.4 stem bore, four M5 holes on r 44.8"
  },
  {
   "file": "butterfly-seat-2.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-2.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-2.5in.stl",
   "note": "2.5 in seat ring Ø72.2 × Ø60.20 × 3 with the stem holes (flexible material)"
  },
  {
   "file": "butterfly-disc-2.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-2.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-2.5in.stl",
   "note": "2.5 in disc Ø60.20 (= the bore) × 6 on a D-flat Ø6 stem bore"
  },
  {
   "file": "butterfly-stem-2.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-2.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-2.5in.stl",
   "note": "2.5 in stem Ø6 × 142 with a 1.0 D-flat"
  },
  {
   "file": "butterfly-handle-2.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-2.5in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-2.5in.stl",
   "note": "2.5 in lever 162 long with a D-flat bore"
  },
  {
   "file": "butterfly-body-half-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-3in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-3in.stl",
   "note": "3 in body half (two per valve): clamp face, Ø115 body, seat counterbore, half the Ø6.4 stem bore, four M5 holes on r 51.5"
  },
  {
   "file": "butterfly-seat-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-3in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-3in.stl",
   "note": "3 in seat ring Ø84.9 × Ø72.90 × 3 with the stem holes (flexible material)"
  },
  {
   "file": "butterfly-disc-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-3in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-3in.stl",
   "note": "3 in disc Ø72.90 (= the bore) × 6 on a D-flat Ø6 stem bore"
  },
  {
   "file": "butterfly-stem-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-3in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-3in.stl",
   "note": "3 in stem Ø6 × 155 with a 1.0 D-flat"
  },
  {
   "file": "butterfly-handle-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-3in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-3in.stl",
   "note": "3 in lever 184 long with a D-flat bore"
  },
  {
   "file": "butterfly-body-half-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-4in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-body-half-4in.stl",
   "note": "4 in body half (two per valve): clamp face, Ø143 body, seat counterbore, half the Ø6.4 stem bore, four M5 holes on r 65.5"
  },
  {
   "file": "butterfly-seat-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-4in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-seat-4in.stl",
   "note": "4 in seat ring Ø109.4 × Ø97.38 × 3 with the stem holes (flexible material)"
  },
  {
   "file": "butterfly-disc-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-4in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-disc-4in.stl",
   "note": "4 in disc Ø97.38 (= the bore) × 6 on a D-flat Ø6 stem bore"
  },
  {
   "file": "butterfly-stem-4in",
   "formats": [
    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-4in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-stem-4in.stl",
   "note": "4 in stem Ø6 × 183 with a 1.0 D-flat"
  },
  {
   "file": "butterfly-handle-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-4in.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/butterfly-handle-4in.stl",
   "note": "4 in lever 229 long with a D-flat bore"
  }
 ],
 "markdown": "https://xemstudio.com/objects/tri-clamp-butterfly-valves/index.md"
}