Two-bolt high-pressure clamps for 10 and 12 in tri-clamp joints — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/sanitary-clamp-bolted-clamps-10-12in/ (CC BY 4.0) Basis: Groove as the site's tri-clamp clamps (the ISO 2852 rim's 20° back cone mirrored, contact after 0.4, 0.6 squeeze), on the 10 / 12 in rims; two halves, one M8 bolt at each split Catalog version: 2026-10-20 Sizes: see table below - Published ratings (Steel & O'Brien, psi at 70 °F / 250 °F): 10 in 13MHP high-pressure 200 / 125, 13ASME double-bolt 161 / 145, 13MHHM wing-nut 75 / 40; 12 in 150 / 100, 102 / 92, 50 / 25. Holland and Shaw rate their hinged wing-nut clamps lower still (10 in 40 / 30 psi). A wing-nut clamp is not a pressure clamp at these sizes. - This clamp is a Xem Studio design, not a copy of any of those: the end load on a 10 in joint at 6 bar gauge is 32.1 kN (pressure out to the groove diameter), the 20° groove turns it into a hoop tension of 1859 N at each split (F tan 20° / 2π), 51 MPa on an M8's stress area before the seating load. The section behind the groove is 6 mm; size the clamp's own material for that tension at the joint's temperature, or use a rated commercial high-pressure clamp of the same rim size. - Each half: lug at each end with an M8 clearance hole (Ø9, ISO 273 medium) along the split and a 13 AF nut trap 6.8 deep on the lug's outer face; M8 × 40 heads on one half, nuts in the other's traps. Tighten evenly until the halves just meet. size_in clamp_od_mm width_mm bolt_spacing_mm bolts 13MHP_psi_70F_250F 13MHHM_psi_70F_250F 10 282.5 19.43 298.5 2 × M8 × 40 + nuts 200 / 125 75 / 40 12 333.3 19.43 349.3 2 × M8 × 40 + nuts 150 / 100 50 / 25 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Steel & O'Brien: Sanitary products catalog 2024: 16AMP end caps 10 / 12 in (A 0.480, B 10.570 / 12.570 in); L14AM7 ferrules 1.500 in; clamp ratings 13MHHM, 13MHP, 13ASME — PDF — publisher's catalogue; dimensions cited, nothing copied — https://www.steelobrien.com/wp-content/uploads/2024/03/Sanitary-2024-FINAL.pdf - Holland Applied Technologies: Sanitary tri-clamp fittings: EG14AM7 ferrules 8 / 10 / 12 in (1.500, bore 9.732 / 11.732 in, tube 10.000 / 12.000 in); EG16A caps (10.570 / 12.570 in) — PDF — publisher's catalogue; dimensions cited, nothing copied — https://hollandapt.com/wp-content/uploads/2022/12/Sanitary-Tri-Clamp-Fittings.pdf - Shaw Stainless & Alloy: Sanitary clamp data sheet: EG14AM7 ferrules (bore 9.732 / 11.732 in), EG16A caps 10.570 / 12.570 in, 13MHHM ratings — PDF — publisher's data sheet; dimensions cited, nothing copied — https://stainlessandalloy.com/pdf/data-sheets/sanitary-clamp-data-sheet.pdf - ISO (via iTeh sample): ISO 2852 clamp liners: face profile (2.85 rim, 1.6 recess, 20° back) and land width — PDF — standard excerpt; dimensions are facts — https://cdn.standards.iteh.ai/samples/7850/eb49c396488d408c8ced3e2961d76cf3/ISO-2852-1974.pdf - McGraw-Hill: Young & Budynas, Roark's Formulas for Stress and Strain, 7th ed.: Table 8.1 (fixed–guided beam), Table 11.2 (circular plates under uniform pressure) — book — formulas are facts [verify license at link] — https://www.accessengineeringlibrary.com/content/book/9780071742474 Free files (CC BY 4.0, Xem Studio; STEP + STL, 2 parts): https://xemstudio.com/files/hardware/sanitary-clamp-bolted-clamps-10-12in/index.json API: https://xemstudio.com/api/geometry?object=sanitary-clamp-bolted-clamps-10-12in