Tri-clamp volume fillers: 2 in tee-run plugs and annular sleeves — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-volume-filler/  (CC BY 4.0)
Basis: ASME BPE 2 in bore (Ø47.5); ISO 2852 Type B lip reach (2.8 from the joint plane, 1.95 past the face); passage and gap sizes are design values
Catalog version: 2026-10-20

Sizes: see table below
- Every cubic centimetre of gas that is not swept and not in a heat exchanger lowers the pressure swing. These plugs fill the parts of the fittings where the gas does no work and leave a defined path through them.
- Tee-run plugs fill the 177.8 mm run of a 2 in tee between the two gasket lips. The blind plug (173.9 long) has a Ø16 passage from one end to the centre and out to the branch; the half beyond the branch is solid, so a capped run end holds no gas. The rod plug has a Ø12 passage end to end so a Ø3 displacer rod passes through it.
- Annular sleeves fill a spool with a 1.0 mm gas gap along the tube wall: the core is Ø45.5, three 3 mm ribs touch the bore. On the hot leg the gap is the heater; on the cold leg the cooler.
- All outer diameters are the bore, Ø47.5: a slide fit (Mating features). The gaps and passages are designed.

file  od_mm  length_mm  passage
plug-tee-2in-blind  47.5  173.9  Ø16 axial to centre + Ø16 radial
plug-tee-2in-rod-106.55  47.5  106.55  Ø12 axial through + Ø16 radial
sleeve-2in-76.2  47.5  76.2  1.0 annular gap
sleeve-2in-32  47.5  32.0  1.0 annular gap

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- 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
- 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
- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/

Free files (CC BY 4.0, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/tri-clamp-volume-filler/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-volume-filler