{
 "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": "sanitary-clamp-ferrules",
 "name": "Sanitary clamp weld ferrules, short and medium: ½ to 4 in",
 "kind": "standard",
 "category": "Hardware",
 "group": "Sanitary clamp fittings",
 "year": null,
 "question": "What are the flange and tube dimensions of each tri-clamp ferrule size?",
 "tags": [
  "ferrule",
  "14wmp",
  "tri-clamp",
  "sanitary",
  "weld ferrule"
 ],
 "aliases": [
  "tri clamp size chart",
  "tri clamp flange diameter",
  "sanitary ferrule dimensions",
  "14wmp ferrule",
  "mini tri clamp 25mm"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 16,
 "url": "https://xemstudio.com/objects/sanitary-clamp-ferrules/",
 "sheet_txt": "https://xemstudio.com/objects/sanitary-clamp-ferrules/sheet.txt",
 "sheet": {
  "basis": "ASME BPE / 3-A clamp-fitting dimensions published identically by Dixon and Steel & O'Brien; ISO 2852 face profile",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A weld ferrule: one ISO 2852 face on a length of BPE tube. Short (14WMP) is 12.7 mm (0.5 in) long, medium (L14AM7) 28.6 mm (1.125 in).",
   "Tube OD 12.7 / 19.05 / 25.4 / 38.1 / 50.8 / 63.5 / 76.2 / 101.6 mm, wall 1.65 mm (4 in: 2.11).",
   "Flange: ½–¾ in share Ø25.0, 1–1½ in share Ø50.5, 2 in Ø64.0, 2½ in Ø77.5, 3 in Ø91.0, 4 in Ø119.0.",
   "Faces are the ISO 2852 profile (2.85 mm rim, 1.6 mm gasket recess, 20° back cone) on the BPE flange diameters; the groove diameter on ½, ¾ and 4 in is derived (flange − 7.0 / 7.5 mm), the rest is from the standard."
  ],
  "table": {
   "columns": [
    "size_in",
    "tube_od_mm",
    "wall_mm",
    "bore_mm",
    "flange_od_mm",
    "groove_mm",
    "lengths_mm"
   ],
   "rows": [
    [
     "½",
     12.7,
     1.65,
     9.4,
     25,
     18,
     "12.7 / 28.6"
    ],
    [
     "¾",
     19.05,
     1.65,
     15.75,
     25,
     18,
     "12.7 / 28.6"
    ],
    [
     "1",
     25.4,
     1.65,
     22.1,
     50.5,
     43.5,
     "12.7 / 28.6"
    ],
    [
     "1½",
     38.1,
     1.65,
     34.8,
     50.5,
     43.5,
     "12.7 / 28.6"
    ],
    [
     "2",
     50.8,
     1.65,
     47.5,
     64,
     56.5,
     "12.7 / 28.6"
    ],
    [
     "2½",
     63.5,
     1.65,
     60.2,
     77.5,
     70.5,
     "12.7 / 28.6"
    ],
    [
     "3",
     76.2,
     1.65,
     72.9,
     91,
     83.5,
     "12.7 / 28.6"
    ],
    [
     "4",
     101.6,
     2.11,
     97.38,
     119,
     111.5,
     "12.7 / 28.6"
    ]
   ]
  }
 },
 "sheet_text": "Sanitary clamp weld ferrules, short and medium: ½ to 4 in — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/sanitary-clamp-ferrules/  (CC BY 4.0)\nBasis: ASME BPE / 3-A clamp-fitting dimensions published identically by Dixon and Steel & O'Brien; ISO 2852 face profile\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A weld ferrule: one ISO 2852 face on a length of BPE tube. Short (14WMP) is 12.7 mm (0.5 in) long, medium (L14AM7) 28.6 mm (1.125 in).\n- Tube OD 12.7 / 19.05 / 25.4 / 38.1 / 50.8 / 63.5 / 76.2 / 101.6 mm, wall 1.65 mm (4 in: 2.11).\n- Flange: ½–¾ in share Ø25.0, 1–1½ in share Ø50.5, 2 in Ø64.0, 2½ in Ø77.5, 3 in Ø91.0, 4 in Ø119.0.\n- Faces are the ISO 2852 profile (2.85 mm rim, 1.6 mm gasket recess, 20° back cone) on the BPE flange diameters; the groove diameter on ½, ¾ and 4 in is derived (flange − 7.0 / 7.5 mm), the rest is from the standard.\n\nsize_in  tube_od_mm  wall_mm  bore_mm  flange_od_mm  groove_mm  lengths_mm\n½  12.7  1.65  9.4  25.0  18.0  12.7 / 28.6\n¾  19.05  1.65  15.75  25.0  18.0  12.7 / 28.6\n1  25.4  1.65  22.1  50.5  43.5  12.7 / 28.6\n1½  38.1  1.65  34.8  50.5  43.5  12.7 / 28.6\n2  50.8  1.65  47.5  64.0  56.5  12.7 / 28.6\n2½  63.5  1.65  60.2  77.5  70.5  12.7 / 28.6\n3  76.2  1.65  72.9  91.0  83.5  12.7 / 28.6\n4  101.6  2.11  97.38  119.0  111.5  12.7 / 28.6\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- ASME: BPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall) — standard — ASME; dimensions are facts [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/bpe-bioprocessing-equipment\n- ISO (via iTeh sample): ISO 2852 clamp liners: face profile and flange / groove diameters — PDF — standard excerpt; dimensions are facts — https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf\n- Dixon Sanitary: Clamp elbows, ferrules: dimension sheet — PDF — publisher's catalogue; dimensions cited, nothing copied — https://dixonvalve.com/en/media/1397776\n- Steel & O'Brien: Sanitary products catalog 2024 (clamp fittings dimension tables) — PDF — publisher's catalogue; dimensions cited, nothing copied — https://www.steelobrien.com/wp-content/uploads/2024/03/Sanitary-2024-FINAL.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 16 parts): https://xemstudio.com/files/hardware/sanitary-clamp-ferrules/index.json\nAPI: https://xemstudio.com/api/geometry?object=sanitary-clamp-ferrules\n",
 "sources": [
  {
   "publisher": "ASME",
   "title": "BPE Bioprocessing Equipment (clamp fitting dimensions, tube OD and wall)",
   "url": "https://www.asme.org/codes-standards/find-codes-standards/bpe-bioprocessing-equipment",
   "formats": [
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   "license": "ASME; dimensions are facts",
   "license_verified": false,
   "hosted": false
  },
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   "publisher": "ISO (via iTeh sample)",
   "title": "ISO 2852 clamp liners: face profile and flange / groove diameters",
   "url": "https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf",
   "formats": [
    "PDF"
   ],
   "license": "standard excerpt; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Dixon Sanitary",
   "title": "Clamp elbows, ferrules: dimension sheet",
   "url": "https://dixonvalve.com/en/media/1397776",
   "formats": [
    "PDF"
   ],
   "license": "publisher's catalogue; dimensions cited, nothing copied",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Steel & O'Brien",
   "title": "Sanitary products catalog 2024 (clamp fittings dimension tables)",
   "url": "https://www.steelobrien.com/wp-content/uploads/2024/03/Sanitary-2024-FINAL.pdf",
   "formats": [
    "PDF"
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   "license": "publisher's catalogue; dimensions cited, nothing copied",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
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  "tolerance_mm": null
 },
 "related": [
  "sanitary-clamp-spools",
  "sanitary-clamp-end-caps",
  "sanitary-clamp-gaskets",
  "tri-clamp-ferrule",
  "tri-clamp-clamps"
 ],
 "fits": [
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "sanitary-clamp-end-caps",
     "why": "cap on the face"
    },
    {
     "slug": "sanitary-clamp-tees",
     "why": "any fitting with the same flange"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "tri-clamp-ferrule",
     "why": "the original 1–3 in ferrules"
    }
   ]
  },
  {
   "role": "Also needed",
   "items": [
    {
     "slug": "sanitary-clamp-gaskets",
     "why": "Type B gasket per joint"
    },
    {
     "slug": "tri-clamp-clamps",
     "why": "clamp per joint"
    }
   ]
  }
 ],
 "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": "clamp faces",
   "exact": "ISO 2852 / BPE flange",
   "mates": "clamp + Type B gasket",
   "fit": "clamp",
   "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 is the flange diameter of a 2 inch tri-clamp?",
   "a": "64.0 mm; 1 and 1½ in share 50.5, ½ and ¾ in share 25.0, 2½ in 77.5, 3 in 91.0, 4 in 119.0."
  },
  {
   "q": "Is a 1½ inch tri-clamp the same as a 1 inch?",
   "a": "Same Ø50.5 flange and clamp, different tube: 38.1 vs 25.4 mm OD."
  },
  {
   "q": "What is the wall of sanitary tube?",
   "a": "1.65 mm (0.065 in) from ½ to 3 in; 2.11 mm (0.083 in) at 4 in."
  }
 ],
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