{
 "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-brewing-sensor-lids",
 "name": "Tri-clamp brewing sensor lids: 4, 6 and 8 in caps with every port a fermenter needs",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Sanitary clamp fittings",
 "year": null,
 "question": "What lid lets me log temperature, pH, CO₂ and pressure from the top of a tri-clamp fermenter?",
 "tags": [
  "sensor lid",
  "fermenter lid",
  "brewing sensors",
  "data logging",
  "ph",
  "temperature",
  "pressure",
  "sanitary",
  "tri-clamp",
  "clamp fitting",
  "brewing",
  "homebrew"
 ],
 "aliases": [
  "fermenter sensor lid tri clamp",
  "6 inch tri clamp lid with ports",
  "brewing data logging lid",
  "tri clamp lid ph probe temperature pressure"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 5,
 "url": "https://xemstudio.com/objects/tri-clamp-brewing-sensor-lids/",
 "sheet_txt": "https://xemstudio.com/objects/tri-clamp-brewing-sensor-lids/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design on the standard solid cap of each size: a 1½ in clamp port at the centre and a ring of PG13.5 probe ports, Ø6 O-ring probe glands, ¼ NPT half couplings and a ½ in hose barb",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "For a vessel that can only be fitted through the top. Centre 1½ in clamp: a bubbler gravity cap, a thermowell, a dip tube, a carb stone or a racking cap. PG13.5 ports: pH, dissolved O₂ or CO₂ probes. Ø6 glands: temperature probes at two depths. ¼ NPT: a pressure transducer or gauge and a gas-in valve (nitrogen or CO₂). Barb: blow-off hose, or a gas-flow meter on the CO₂ coming off.",
   "Weight is read with the vessel on a scale; gravity can be read with the bubbler cap instead of a floating hydrometer.",
   "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",
    "layout",
    "clamp_1.5in",
    "pg13.5",
    "glands_6mm",
    "npt_1/4",
    "barbs"
   ],
   "rows": [
    [
     "4",
     "basic",
     1,
     1,
     1,
     1,
     1
    ],
    [
     "6",
     "basic",
     1,
     1,
     1,
     1,
     1
    ],
    [
     "6",
     "full",
     1,
     2,
     2,
     2,
     1
    ],
    [
     "8",
     "basic",
     1,
     1,
     1,
     1,
     1
    ],
    [
     "8",
     "full",
     1,
     2,
     2,
     2,
     1
    ]
   ]
  }
 },
 "sheet_text": "Tri-clamp brewing sensor lids: 4, 6 and 8 in caps with every port a fermenter needs — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/tri-clamp-brewing-sensor-lids/  (CC BY 4.0)\nBasis: Xem Studio design on the standard solid cap of each size: a 1½ in clamp port at the centre and a ring of PG13.5 probe ports, Ø6 O-ring probe glands, ¼ NPT half couplings and a ½ in hose barb\nCatalog version: 2026-10-20\n\nSizes: see table below\n- For a vessel that can only be fitted through the top. Centre 1½ in clamp: a bubbler gravity cap, a thermowell, a dip tube, a carb stone or a racking cap. PG13.5 ports: pH, dissolved O₂ or CO₂ probes. Ø6 glands: temperature probes at two depths. ¼ NPT: a pressure transducer or gauge and a gas-in valve (nitrogen or CO₂). Barb: blow-off hose, or a gas-flow meter on the CO₂ coming off.\n- Weight is read with the vessel on a scale; gravity can be read with the bubbler cap instead of a floating hydrometer.\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  layout  clamp_1.5in  pg13.5  glands_6mm  npt_1/4  barbs\n4  basic  1  1  1  1  1\n6  basic  1  1  1  1  1\n6  full  1  2  2  2  1\n8  basic  1  1  1  1  1\n8  full  1  2  2  2  1\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- DIN: DIN 40430 Pg (Panzergewinde) threads: PG13.5 Ø20.4 major, 1.41 pitch (18 tpi), Ø18.6 core; the thread of 12 mm process probes (pH, dissolved O2 / CO2) — standard — DIN; dimensions are facts [verify license at link] — https://www.din.de/en\n- ASME: B1.20.1 Pipe threads, general purpose (NPT): major diameter, L2, tap drill; B16.11 forged fittings (Class 3000 couplings); B36.10 Sch 40 bore — standard — ASME; dimensions are facts [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/b1-20-1-pipe-threads-general-purpose-inch\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- Dixon: 14MPHR brewery hose barb: A and barb OD B (hose ID + 0.040 in) per size, ½ to 6 in — PDF — publisher's catalogue; dimensions cited — https://www.cooneybrothers.com/userfiles/ad/documents/Dixon_Sanitary_14MPHRG600_Catalog.pdf\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, 5 parts): https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/index.json\nAPI: https://xemstudio.com/api/geometry?object=tri-clamp-brewing-sensor-lids\n",
 "sources": [
  {
   "publisher": "DIN",
   "title": "DIN 40430 Pg (Panzergewinde) threads: PG13.5 Ø20.4 major, 1.41 pitch (18 tpi), Ø18.6 core; the thread of 12 mm process probes (pH, dissolved O2 / CO2)",
   "url": "https://www.din.de/en",
   "formats": [
    "standard"
   ],
   "license": "DIN; dimensions are facts",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "ASME",
   "title": "B1.20.1 Pipe threads, general purpose (NPT): major diameter, L2, tap drill; B16.11 forged fittings (Class 3000 couplings); B36.10 Sch 40 bore",
   "url": "https://www.asme.org/codes-standards/find-codes-standards/b1-20-1-pipe-threads-general-purpose-inch",
   "formats": [
    "standard"
   ],
   "license": "ASME; dimensions are facts",
   "license_verified": false,
   "hosted": false
  },
  {
   "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": "Dixon",
   "title": "14MPHR brewery hose barb: A and barb OD B (hose ID + 0.040 in) per size, ½ to 6 in",
   "url": "https://www.cooneybrothers.com/userfiles/ad/documents/Dixon_Sanitary_14MPHRG600_Catalog.pdf",
   "formats": [
    "PDF"
   ],
   "license": "publisher's catalogue; 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-bubbler-gravity-caps",
  "tri-clamp-pg13-5-probe-ports",
  "tri-clamp-probe-gland-caps",
  "tri-clamp-dished-bottom-vessels",
  "tri-clamp-dome-lids",
  "tri-clamp-thermowells"
 ],
 "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 lid for a 6 × 18 in vessel?",
   "a": "The 6 in full lid: two probe ports, two temperature glands, two ¼ NPT ports, a blow-off barb and a 1½ in clamp port in the middle."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "sensor-lid-4in-basic",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-4in-basic.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-4in-basic.stl",
   "note": "4 in sensor lid (basic): 1½ in clamp port at the centre; on r 34: PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb"
  },
  {
   "file": "sensor-lid-6in-basic",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-6in-basic.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-6in-basic.stl",
   "note": "6 in sensor lid (basic): 1½ in clamp port at the centre; on r 52: PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb"
  },
  {
   "file": "sensor-lid-6in-full",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-6in-full.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-6in-full.stl",
   "note": "6 in sensor lid (full): 1½ in clamp port at the centre; on r 52: PG13.5 probe port, PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb, Ø6 probe gland, ¼ FNPT"
  },
  {
   "file": "sensor-lid-8in-basic",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-8in-basic.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-8in-basic.stl",
   "note": "8 in sensor lid (basic): 1½ in clamp port at the centre; on r 70: PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb"
  },
  {
   "file": "sensor-lid-8in-full",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-8in-full.step",
   "stl": "https://xemstudio.com/files/hardware/tri-clamp-brewing-sensor-lids/sensor-lid-8in-full.stl",
   "note": "8 in sensor lid (full): 1½ in clamp port at the centre; on r 70: PG13.5 probe port, PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb, Ø6 probe gland, ¼ FNPT"
  }
 ],
 "markdown": "https://xemstudio.com/objects/tri-clamp-brewing-sensor-lids/index.md"
}