Tri-clamp butterfly valves, printable: 1½ to 4 in — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-butterfly-valves/ (CC BY 4.0) Basis: Xem Studio design: two bolted body halves with ISO 2852 clamp faces, a flexible seat ring clamped between them, a full-bore disc on a Ø6 D-flat stem, a lever Catalog version: 2026-10-20 Sizes: see table below - Face to face 44 mm for every size: each half is the clamp face and its 14 mm neck (room for the clamp) plus an 8 mm body; the seat ring sits in counterbores in both halves. - The disc is drawn at the bore; it seals by squeezing the flexible seat. Quarter turn: lever along the line is open. - 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_in face_to_face_mm body_od_mm bore_mm bolts 1.5 44.0 74.5 34.8 4 × M5 2 44.0 88.0 47.5 4 × M5 2.5 44.0 101.5 60.2 4 × M5 3 44.0 115.0 72.9 4 × M5 4 44.0 143.0 97.38 4 × M5 Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - 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 - 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, 25 parts): https://xemstudio.com/files/hardware/tri-clamp-butterfly-valves/index.json API: https://xemstudio.com/api/geometry?object=tri-clamp-butterfly-valves