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Tri-clamp dome lids: 1½ to 12 in, plain or with a port at the crown

Name: Tri-clamp dome lids: 1½ to 12 in, plain or with a port at the crown dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

Is there a domed tri-clamp lid with a port on top? · Hardware · basis: Xem Studio design: an F&D head (crown radius = OD, knuckle 6 %) on a short skirt of the size's tube, with the ISO 2852 face; ports are a ½ NPT Class 3000 half coupling or a 1½ in clamp nozzle

Exact dimensions. True size, with no printing tolerance added.

sizes: 8 in table

Notes

Domed lids for the same size of ferrule, vessel or spool. The dome sheds condensate back into the vessel and leaves headspace; the crown port takes an airlock, a blow-off, a thermowell or a spunding valve through a 1½ in clamp or ½ NPT.
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.

Sizes

size_in	tube_od_mm	dome_height_mm
1½	38.1	6.5
2	50.8	8.6
3	76.2	12.9
4	101.6	17.2
6	152.4	25.8
8	203.2	34.4
10	254.0	43.0
12	304.8	51.6

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

ASME	Flanged and dished (F&D) heads: crown radius = OD, knuckle radius 6 % of OD (BPVC Section VIII torispherical head)	standard	ASME; proportions are facts verify
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
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
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

Free files

★ Free files 16 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

dome-lid-1.5in	1½ in dome lid (F&D head), 14.6 from the face to the crown	STEP · STL
dome-lid-2in	2 in dome lid (F&D head), 16.9 from the face to the crown	STEP · STL
dome-lid-2in-half-npt	2 in dome lid with a ½ NPT half coupling at the crown (tap-drill bore Ø18.3)	STEP · STL
dome-lid-3in	3 in dome lid (F&D head), 21.4 from the face to the crown	STEP · STL
dome-lid-3in-half-npt	3 in dome lid with a ½ NPT half coupling at the crown (tap-drill bore Ø18.3)	STEP · STL
dome-lid-4in	4 in dome lid (F&D head), 26.2 from the face to the crown	STEP · STL
dome-lid-4in-half-npt	4 in dome lid with a ½ NPT half coupling at the crown (tap-drill bore Ø18.3)	STEP · STL
dome-lid-4in-1.5in-port	4 in dome lid with a 1½ in clamp port at the crown, 51.6 from the face to the port face	STEP · STL
dome-lid-6in	6 in dome lid (F&D head), 34.3 from the face to the crown	STEP · STL
dome-lid-6in-1.5in-port	6 in dome lid with a 1½ in clamp port at the crown, 59.7 from the face to the port face	STEP · STL
dome-lid-8in	8 in dome lid (F&D head), 42.9 from the face to the crown	STEP · STL
dome-lid-8in-1.5in-port	8 in dome lid with a 1½ in clamp port at the crown, 68.3 from the face to the port face	STEP · STL
dome-lid-10in	10 in dome lid (F&D head), 51.5 from the face to the crown	STEP · STL
dome-lid-10in-1.5in-port	10 in dome lid with a 1½ in clamp port at the crown, 76.9 from the face to the port face	STEP · STL
dome-lid-12in	12 in dome lid (F&D head), 60.1 from the face to the crown	STEP · STL
dome-lid-12in-1.5in-port	12 in dome lid with a 1½ in clamp port at the crown, 85.5 from the face to the port face	STEP · STL