Sanitary clamp spools: 3, 6 and 12 in, ½ to 4 in — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/sanitary-clamp-spools/ (CC BY 4.0) Basis: ASME BPE / 3-A clamp-fitting dimensions published identically by Dixon and Steel & O'Brien; ISO 2852 face profile Catalog version: 2026-10-20 Sizes: see table below - A spool: BPE tube with an ISO 2852 face at each end, 76.2, 152.4 or 304.8 mm (3, 6, 12 in) face to face. - Bore 9.4 / 15.75 / 22.1 / 34.8 / 47.5 / 60.2 / 72.9 / 97.38 mm for ½ to 4 in (tube OD minus two 1.65 mm walls; 2.11 at 4 in). - 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. size_in tube_od_mm bore_mm flange_od_mm lengths_mm ½ 12.7 9.4 25.0 76.2 / 152.4 / 304.8 ¾ 19.05 15.75 25.0 76.2 / 152.4 / 304.8 1 25.4 22.1 50.5 76.2 / 152.4 / 304.8 1½ 38.1 34.8 50.5 76.2 / 152.4 / 304.8 2 50.8 47.5 64.0 76.2 / 152.4 / 304.8 2½ 63.5 60.2 77.5 76.2 / 152.4 / 304.8 3 76.2 72.9 91.0 76.2 / 152.4 / 304.8 4 101.6 97.38 119.0 76.2 / 152.4 / 304.8 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - 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 - 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 - Dixon Sanitary: Clamp elbows, ferrules: dimension sheet — PDF — publisher's catalogue; dimensions cited, nothing copied — https://dixonvalve.com/en/media/1397776 - 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 Free files (CC BY 4.0, Xem Studio; STEP + STL, 24 parts): https://xemstudio.com/files/hardware/sanitary-clamp-spools/index.json API: https://xemstudio.com/api/geometry?object=sanitary-clamp-spools