{
 "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-elbows",
 "name": "Sanitary clamp elbows, 90° and 45°, ½ to 4 in (tri-clamp style, BPE)",
 "kind": "standard",
 "category": "Hardware",
 "group": "Sanitary clamp fittings",
 "year": null,
 "question": "What is the centre-to-face dimension of a 2 inch sanitary clamp elbow?",
 "tags": [
  "elbow",
  "90 degree",
  "45 degree",
  "2cmp",
  "2kmp",
  "sanitary",
  "tri-clamp",
  "clamp fitting",
  "stainless fitting",
  "brewing",
  "ferrule"
 ],
 "aliases": [
  "tri clamp elbow dimensions",
  "sanitary 90 elbow 2 inch",
  "2cmp elbow",
  "45 degree tri clamp elbow",
  "tri clamp elbow stl",
  "sanitary elbow step file"
 ],
 "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-elbows/",
 "sheet_txt": "https://xemstudio.com/objects/sanitary-clamp-elbows/sheet.txt",
 "sheet": {
  "basis": "ASME BPE / 3-A clamp-fitting dimensions published identically by two manufacturers; ISO 2852 face profile; drawn by Xem Studio from those numbers",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Clamp × clamp elbows: 90° (2CMP) and 45° (2KMP), both on the same centreline radius per size; a short straight sits between each face and the bend (0.5 in, 4 in: 0.625 in).",
   "Centre to face is measured from the intersection of the two leg centrelines to the face; that is the number to lay out a run with.",
   "Faces: ISO 2852 profile (2.85 mm rim, 1.6 mm gasket recess, 20° back cone) on the BPE flange diameters ½–¾ in 25.0, 1–1½ in 50.5, 2 in 64.0, 2½ in 77.5, 3 in 91.0, 4 in 119.0 mm; 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). The gasket-groove diameter on ½, ¾ and 4 in is derived (flange − 7.0 / 7.5 mm, the land width of every size ISO 2852 lists); the rest is from the standard."
  ],
  "table": {
   "columns": [
    "size_in",
    "tube_od_mm",
    "flange_mm",
    "c_to_f_90_mm",
    "c_to_f_45_mm",
    "radius_mm"
   ],
   "rows": [
    [
     "½",
     12.7,
     25,
     41.3,
     24.5,
     28.6
    ],
    [
     "¾",
     19.05,
     25,
     41.3,
     24.5,
     28.6
    ],
    [
     "1",
     25.4,
     50.5,
     50.8,
     28.6,
     38.1
    ],
    [
     "1½",
     38.1,
     50.5,
     69.8,
     36.5,
     57.1
    ],
    [
     "2",
     50.8,
     64,
     88.9,
     44.4,
     76.2
    ],
    [
     "2½",
     63.5,
     77.5,
     107.9,
     52.4,
     95.2
    ],
    [
     "3",
     76.2,
     91,
     127,
     60.3,
     114.3
    ],
    [
     "4",
     101.6,
     119,
     168.3,
     79.4,
     152.4
    ]
   ]
  }
 },
 "sheet_text": "Sanitary clamp elbows, 90° and 45°, ½ to 4 in (tri-clamp style, BPE) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/sanitary-clamp-elbows/  (CC BY 4.0)\nBasis: ASME BPE / 3-A clamp-fitting dimensions published identically by two manufacturers; ISO 2852 face profile; drawn by Xem Studio from those numbers\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Clamp × clamp elbows: 90° (2CMP) and 45° (2KMP), both on the same centreline radius per size; a short straight sits between each face and the bend (0.5 in, 4 in: 0.625 in).\n- Centre to face is measured from the intersection of the two leg centrelines to the face; that is the number to lay out a run with.\n- Faces: ISO 2852 profile (2.85 mm rim, 1.6 mm gasket recess, 20° back cone) on the BPE flange diameters ½–¾ in 25.0, 1–1½ in 50.5, 2 in 64.0, 2½ in 77.5, 3 in 91.0, 4 in 119.0 mm; 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). The gasket-groove diameter on ½, ¾ and 4 in is derived (flange − 7.0 / 7.5 mm, the land width of every size ISO 2852 lists); the rest is from the standard.\n\nsize_in  tube_od_mm  flange_mm  c_to_f_90_mm  c_to_f_45_mm  radius_mm\n½  12.7  25.0  41.3  24.5  28.6\n¾  19.05  25.0  41.3  24.5  28.6\n1  25.4  50.5  50.8  28.6  38.1\n1½  38.1  50.5  69.8  36.5  57.1\n2  50.8  64.0  88.9  44.4  76.2\n2½  63.5  77.5  107.9  52.4  95.2\n3  76.2  91.0  127.0  60.3  114.3\n4  101.6  119.0  168.3  79.4  152.4\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-elbows/index.json\nAPI: https://xemstudio.com/api/geometry?object=sanitary-clamp-elbows\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": [
    "standard"
   ],
   "license": "ASME; dimensions are facts",
   "license_verified": false,
   "hosted": false
  },
  {
   "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"
   ],
   "license": "publisher's catalogue; dimensions cited, nothing copied",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "sanitary-clamp-tees-crosses",
  "sanitary-clamp-reducers",
  "sanitary-clamp-caps-ferrules-spools",
  "tri-clamp-clamps",
  "tri-clamp-spool",
  "tri-clamp-ferrule"
 ],
 "fits": [
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "tri-clamp-clamps",
     "why": "a clamp and gasket at each face"
    },
    {
     "slug": "sanitary-clamp-tees-crosses",
     "why": "same faces, same sizes"
    },
    {
     "slug": "sanitary-clamp-caps-ferrules-spools",
     "why": "spools between fittings, caps to close"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "sanitary-clamp-reducers",
     "why": "change size instead of direction"
    }
   ]
  }
 ],
 "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 to any fitting of the same size",
   "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 centre-to-face of a 2 in sanitary 90° clamp elbow?",
   "a": "3.50 in (88.9 mm), on a 3.0 in (76.2 mm) centreline radius; the 45° is 1.75 in (44.5 mm)."
  },
  {
   "q": "Are ½ and ¾ in clamp elbows the same size?",
   "a": "Yes: both use the 25.0 mm mini flange and a 1.625 in centre to face (90°)."
  },
  {
   "q": "Do these mate with real sanitary fittings?",
   "a": "Yes: the faces are the ISO 2852 / BPE profile, so a standard clamp and gasket join them to any clamp fitting of the same size."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "elbow-90-0.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-0.5in.step",
   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-0.5in.stl",
   "note": "½ in 90° clamp × clamp elbow (2CMP): 1.625 in centre to face, R 1.125 in"
  },
  {
   "file": "elbow-45-0.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-0.5in.step",
   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-0.5in.stl",
   "note": "½ in 45° clamp × clamp elbow (2KMP): 0.966 in centre to face, R 1.125 in"
  },
  {
   "file": "elbow-90-0.75in",
   "formats": [
    "step",
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-0.75in.stl",
   "note": "¾ in 90° clamp × clamp elbow (2CMP): 1.625 in centre to face, R 1.125 in"
  },
  {
   "file": "elbow-45-0.75in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-0.75in.stl",
   "note": "¾ in 45° clamp × clamp elbow (2KMP): 0.966 in centre to face, R 1.125 in"
  },
  {
   "file": "elbow-90-1in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-1in.stl",
   "note": "1 in 90° clamp × clamp elbow (2CMP): 2.0 in centre to face, R 1.5 in"
  },
  {
   "file": "elbow-45-1in",
   "formats": [
    "step",
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   ],
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-1in.stl",
   "note": "1 in 45° clamp × clamp elbow (2KMP): 1.125 in centre to face, R 1.5 in"
  },
  {
   "file": "elbow-90-1.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-1.5in.stl",
   "note": "1½ in 90° clamp × clamp elbow (2CMP): 2.75 in centre to face, R 2.25 in"
  },
  {
   "file": "elbow-45-1.5in",
   "formats": [
    "step",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-1.5in.stl",
   "note": "1½ in 45° clamp × clamp elbow (2KMP): 1.437 in centre to face, R 2.25 in"
  },
  {
   "file": "elbow-90-2in",
   "formats": [
    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-2in.stl",
   "note": "2 in 90° clamp × clamp elbow (2CMP): 3.5 in centre to face, R 3.0 in"
  },
  {
   "file": "elbow-45-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-2in.stl",
   "note": "2 in 45° clamp × clamp elbow (2KMP): 1.75 in centre to face, R 3.0 in"
  },
  {
   "file": "elbow-90-2.5in",
   "formats": [
    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-2.5in.stl",
   "note": "2½ in 90° clamp × clamp elbow (2CMP): 4.25 in centre to face, R 3.75 in"
  },
  {
   "file": "elbow-45-2.5in",
   "formats": [
    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-2.5in.stl",
   "note": "2½ in 45° clamp × clamp elbow (2KMP): 2.063 in centre to face, R 3.75 in"
  },
  {
   "file": "elbow-90-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-3in.stl",
   "note": "3 in 90° clamp × clamp elbow (2CMP): 5.0 in centre to face, R 4.5 in"
  },
  {
   "file": "elbow-45-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-3in.step",
   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-3in.stl",
   "note": "3 in 45° clamp × clamp elbow (2KMP): 2.375 in centre to face, R 4.5 in"
  },
  {
   "file": "elbow-90-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-90-4in.stl",
   "note": "4 in 90° clamp × clamp elbow (2CMP): 6.625 in centre to face, R 6.0 in"
  },
  {
   "file": "elbow-45-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-4in.step",
   "stl": "https://xemstudio.com/files/hardware/sanitary-clamp-elbows/elbow-45-4in.stl",
   "note": "4 in 45° clamp × clamp elbow (2KMP): 3.125 in centre to face, R 6.0 in"
  }
 ],
 "markdown": "https://xemstudio.com/objects/sanitary-clamp-elbows/index.md"
}