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Printable tri-clamp (45°): dome lids and ported caps

Can I 3D print a tri-clamp lid with ports? · Hardware · basis: Xem Studio design: the dome lids and ported caps of the standard pages with 45° rims

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

sizes
6 in table

Notes

  • Lids print face down; the dome and ports grow up from the face.
  • Printable tri-clamp: the ISO 2852 face and gasket groove are exactly standard, only the back cone behind each rim is 45° instead of 20°, so no rim overhangs more than 45° from vertical in any print orientation. Join these with the 45° clamps (printable-tri-clamp-clamps) and standard Type B gaskets; a 45° clamp fits only 45° rims, so keep a run all 45°. A 45° cone turns clamp force into face force at 1 : 1 (a 20° cone at 2.7 : 1), so tighten the clamp bolts harder or use M6.
  • Print orientation: straight parts face down; elbows, tees and crosses with one face down; horizontal bores bridge their top, so keep them small or add a light tree support inside.
  • 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_inface_to_crown_mm
1½18.5
221.1
326.2
431.8
638.9
847.5

Where the files are

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

ASMEB1.20.1 Pipe threads, general purpose (NPT): major diameter, L2, tap drill; B16.11 forged fittings (Class 3000 couplings); B36.10 Sch 40 borestandardASME; dimensions are facts verify
GW KentTri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thicknesswebpublisher's guide; dimensions cited
Rubber FabTri-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)PDFmaker 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-45cone-1.5in1½ in dome lid, 18.5 face to crownSTEP · STL
dome-lid-45cone-2in2 in dome lid, 21.1 face to crownSTEP · STL
dome-lid-45cone-3in3 in dome lid, 26.2 face to crownSTEP · STL
dome-lid-45cone-4in4 in dome lid, 31.8 face to crownSTEP · STL
dome-lid-45cone-4in-1.5in-port4 in dome lid with a 1½ in clamp portSTEP · STL
dome-lid-45cone-6in6 in dome lid, 38.9 face to crownSTEP · STL
dome-lid-45cone-6in-1.5in-port6 in dome lid with a 1½ in clamp portSTEP · STL
dome-lid-45cone-8in8 in dome lid, 47.5 face to crownSTEP · STL
dome-lid-45cone-8in-1.5in-port8 in dome lid with a 1½ in clamp portSTEP · STL
cap-45cone-1.5in-1-4npt1–1½ in cap with 1 4nptSTEP · STL
cap-45cone-1.5in-1-2npt1–1½ in cap with 1 2nptSTEP · STL
cap-45cone-2in-1-2npt2 in cap with 1 2nptSTEP · STL
cap-45cone-1.5in-half-in-barb1–1½ in cap with half in barbSTEP · STL
cap-45cone-1.5in-grommet-hole-12.71–1½ in cap with grommet hole 12.7STEP · STL
cap-45cone-4in-1.5in-port4 in cap with 1.5in portSTEP · STL
cap-45cone-6in-1.5in-port6 in cap with 1.5in portSTEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=printable-tri-clamp-lids-caps

Printable tri-clamp (45°): dome lids and ported caps, isometric render of a generated part
Render of dome-lid-45cone-8in-1.5in-port from the free STEP; not to scale.

Fits with

Printable tri-clamp (45°): ferrules, spools and caps, ½ to 4 in, isometric render of a generated part
Printable tri-clamp (45°): ferrules, spools and caps, ½ to 4 in8 sizes★ 46 files
Printable tri-clamp (45°): two-bolt clamps, ½ to 8 in, isometric render of a generated part
Printable tri-clamp (45°): two-bolt clamps, ½ to 8 in8 sizes★ 8 files
Printable tri-clamp (45°): 90° and 45° elbows, ½ to 4 in, isometric render of a generated part
Printable tri-clamp (45°): 90° and 45° elbows, ½ to 4 in8 sizes★ 16 files
Printable tri-clamp (45°): tees, short-outlet tees and crosses, ½ to 4 in, isometric render of a generated part
Printable tri-clamp (45°): tees, short-outlet tees and crosses, ½ to 4 in8 sizes★ 22 files
Printable tri-clamp (45°): concentric and eccentric reducers, ½ to 4 in, isometric render of a generated part
Printable tri-clamp (45°): concentric and eccentric reducers, ½ to 4 in13 sizes★ 26 files
Printable tri-clamp (45°): NPT male, NPT female and hose-barb adapters, isometric render of a generated part
Printable tri-clamp (45°): NPT male, NPT female and hose-barb adapters28 sizes★ 28 files

Questions

Dome or flat?

The dome prints without support face down; a flat cap does too.