Sanitary clamp header manifolds: 1½, 2 and 3 in headers with 3 to 5 outlets (tri-clamp style) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/sanitary-clamp-manifolds/  (CC BY 4.0)
Basis: ASME BPE / 3-A clamp-fitting dimensions published identically by two manufacturers; ISO 2852 face profile; drawn by Xem Studio from those numbers
Catalog version: 2026-10-20

Sizes: see table below
- Header manifolds: a straight header of one size with outlets of the next size down on one side, all clamp faces. This is a Xem Studio layout (manifolds are not a standard part): ends and outlets use the header size's tee centre to face, outlets sit on an even pitch, so they line up with standard tees, valves and spools of the same sizes.
- Close unused outlets with an end cap; join headers end to end with a clamp.
- Faces: ISO 2852 profile (2.85 mm rim, 1.6 mm gasket recess, 20° back cone) on the BPE flange diameters ½–¾ in 25.0, 1–1½ in 50.5, 2 in 64.0, 2½ in 77.5, 3 in 91.0, 4 in 119.0 mm; tube OD 12.7 / 19.05 / 25.4 / 38.1 / 50.8 / 63.5 / 76.2 / 101.6 mm, wall 1.65 mm (4 in: 2.11). The gasket-groove diameter on ½, ¾ and 4 in is derived (flange − 7.0 / 7.5 mm, the land width of every size ISO 2852 lists); the rest is from the standard.

layout  header_face_to_face_mm  pitch_mm  outlet_c_to_f_mm
1½ × 3 × 1  292.1  76.2  69.8
1½ × 4 × 1  368.3  76.2  69.8
2 × 3 × 1½  381.0  101.6  88.9
2 × 4 × 1½  482.6  101.6  88.9
2 × 5 × 1½  584.2  101.6  88.9
3 × 3 × 2  444.5  127.0  95.2
3 × 4 × 2  571.5  127.0  95.2

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, 7 parts): https://xemstudio.com/files/hardware/sanitary-clamp-manifolds/index.json
API: https://xemstudio.com/api/geometry?object=sanitary-clamp-manifolds