Filler plugs for a 2 in tee: run plug with the displacer-rod bore and branch plug, with a Ø12 gas passage — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/tri-clamp-tee-filler-plugs/  (CC BY 4.0)
Basis: Stock 2 in tee bore Ø47.5 (ASME BPE); passage size from the cycle model
Catalog version: 2026-10-20

Sizes: see table below
- A standard 2 in tee holds about 390 mL of gas. Two inserts fill it: a run plug (slid in from a run end) and a branch plug whose saddle-shaped bottom sits on it. What is left is a Ø12 passage from the hot spool's side up to the power cylinder, the displacer rod's Ø6.6 bore and a Ø4 hole to the gland cap's ports.
- Gas left in the tee and its joints about 25.9 mL; Ø44 spigots reach through each gasket's lip to 0.5 mm from what they face.

part  size
tee-run-plug-2in-rod6  Ø47.50 × 172.9, spigots Ø44
tee-branch-plug-2in  Ø47.50 to 86.45, spigot Ø44

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, 2 parts): https://xemstudio.com/files/hardware/tri-clamp-tee-filler-plugs/index.json
API: https://xemstudio.com/api/geometry?object=tri-clamp-tee-filler-plugs