Tri-clamp end caps with ports: NPT, clamp nozzle, hose barb and airlock hole, 1½ to 8 in — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-ported-end-caps/ (CC BY 4.0) Basis: Xem Studio design on the standard solid cap (16AMP thickness per size): ports are ASME B16.11 Class 3000 half couplings tapped to B1.20.1 (drawn as the tap-drill bore), 1½ in clamp nozzles, a ½ in hose barb (14MPHR barb profile) or a plain Ø12.7 hole Catalog version: 2026-10-20 Sizes: see table below - Lids that take something: a thermometer or pressure gauge (¼ or ½ NPT), a ball-lock post or valve, a 1½ in clamp for a thermowell, airlock or spunding valve, a blow-off hose, or an airlock grommet. - Ports are welded half couplings on the real part; here they are one solid with the cap. - 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. size flange_od_mm cap_mm 1–1½ 50.5 6.35 2 64.0 6.35 2½ 77.5 6.35 3 91.0 6.35 4 119.0 7.92 6 166.9 11.1 8 217.7 12.19 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - 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 - 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 - 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 - 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 Free files (CC BY 4.0, Xem Studio; STEP + STL, 42 parts): https://xemstudio.com/files/hardware/tri-clamp-ported-end-caps/index.json API: https://xemstudio.com/api/geometry?object=tri-clamp-ported-end-caps