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Tri-clamp orifice-plate gaskets: 1½ to 4 in, holes at 25, 50 and 75 % of the bore
What is a tri-clamp orifice plate gasket? · Hardware · basis: Xem Studio design: the ISO 2852 Type B gasket with a 1.5 mm plate across the bore and one centre hole
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 12 in table
Notes
- Restricts flow at a joint: slows a drain, sets a flow for a chiller or a sparge, or makes a crude flow meter. Hole sizes are 25, 50 and 75 % of the bore.
- 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 | bore_mm | hole_mm |
|---|---|---|
| 1.5 | 34.8 | 8.7 |
| 1.5 | 34.8 | 17.4 |
| 1.5 | 34.8 | 26.1 |
| 2 | 47.5 | 11.9 |
| 2 | 47.5 | 23.8 |
| 2 | 47.5 | 35.6 |
| 3 | 72.9 | 18.2 |
| 3 | 72.9 | 36.5 |
| 3 | 72.9 | 54.7 |
| 4 | 97.38 | 24.3 |
| 4 | 97.38 | 48.7 |
| 4 | 97.38 | 73.0 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| 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) | maker chart; dimensions are facts verify |
Free files
★ Free files 12 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| orifice-gasket-1.5in-8.7mm | 1.5 in orifice-plate gasket: 1.5 plate, Ø8.7 hole (25 % of the bore) | STEP · STL |
| orifice-gasket-1.5in-17.4mm | 1.5 in orifice-plate gasket: 1.5 plate, Ø17.4 hole (50 % of the bore) | STEP · STL |
| orifice-gasket-1.5in-26.1mm | 1.5 in orifice-plate gasket: 1.5 plate, Ø26.1 hole (75 % of the bore) | STEP · STL |
| orifice-gasket-2in-11.9mm | 2 in orifice-plate gasket: 1.5 plate, Ø11.9 hole (25 % of the bore) | STEP · STL |
| orifice-gasket-2in-23.8mm | 2 in orifice-plate gasket: 1.5 plate, Ø23.8 hole (50 % of the bore) | STEP · STL |
| orifice-gasket-2in-35.6mm | 2 in orifice-plate gasket: 1.5 plate, Ø35.6 hole (75 % of the bore) | STEP · STL |
| orifice-gasket-3in-18.2mm | 3 in orifice-plate gasket: 1.5 plate, Ø18.2 hole (25 % of the bore) | STEP · STL |
| orifice-gasket-3in-36.5mm | 3 in orifice-plate gasket: 1.5 plate, Ø36.5 hole (50 % of the bore) | STEP · STL |
| orifice-gasket-3in-54.7mm | 3 in orifice-plate gasket: 1.5 plate, Ø54.7 hole (75 % of the bore) | STEP · STL |
| orifice-gasket-4in-24.3mm | 4 in orifice-plate gasket: 1.5 plate, Ø24.3 hole (25 % of the bore) | STEP · STL |
| orifice-gasket-4in-48.7mm | 4 in orifice-plate gasket: 1.5 plate, Ø48.7 hole (50 % of the bore) | STEP · STL |
| orifice-gasket-4in-73mm | 4 in orifice-plate gasket: 1.5 plate, Ø73 hole (75 % of the bore) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-orifice-plate-gaskets
Fits with
Questions
Which hole size?
Start at 50 % of the bore; the flow through an orifice goes roughly with the hole area.