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Tri-clamp end caps with ports: NPT, clamp nozzle, hose barb and airlock hole, 1½ to 8 in
Is there a tri-clamp cap with a ½ inch NPT port? · Hardware · basis: Xem Studio design on the standard solid cap (16AMP thickness per size): ports are ASME B16.11 Class 3000 half couplings tapped to B1.20.1 (drawn as the tap-drill bore), 1½ in clamp nozzles, a ½ in hose barb (14MPHR barb profile) or a plain Ø12.7 hole
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 7 in table
Notes
- Lids that take something: a thermometer or pressure gauge (¼ or ½ NPT), a ball-lock post or valve, a 1½ in clamp for a thermowell, airlock or spunding valve, a blow-off hose, or an airlock grommet.
- Ports are welded half couplings on the real part; here they are one solid with the cap.
- 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 | flange_od_mm | cap_mm |
|---|---|---|
| 1–1½ | 50.5 | 6.35 |
| 2 | 64.0 | 6.35 |
| 2½ | 77.5 | 6.35 |
| 3 | 91.0 | 6.35 |
| 4 | 119.0 | 7.92 |
| 6 | 166.9 | 11.1 |
| 8 | 217.7 | 12.19 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| 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 |
| Dixon | 14MPHR brewery hose barb: A and barb OD B (hose ID + 0.040 in) per size, ½ to 6 in | publisher's catalogue; 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 42 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| cap-1.5in-1-8npt | 1–1½ in cap with a ⅛ FNPT half coupling at the centre (tap-drill Ø8.6) | STEP · STL |
| cap-1.5in-1-4npt | 1–1½ in cap with a ¼ FNPT half coupling at the centre (tap-drill Ø11.1) | STEP · STL |
| cap-1.5in-grommet-hole-12.7 | 1–1½ in cap with a Ø12.7 (½ in) hole for an airlock grommet | STEP · STL |
| cap-1.5in-half-in-barb | 1–1½ in cap with a ½ in hose barb (blow-off) | STEP · STL |
| cap-2in-1-8npt | 2 in cap with a ⅛ FNPT half coupling at the centre (tap-drill Ø8.6) | STEP · STL |
| cap-2in-1-4npt | 2 in cap with a ¼ FNPT half coupling at the centre (tap-drill Ø11.1) | STEP · STL |
| cap-2in-1-2npt | 2 in cap with a ½ FNPT half coupling at the centre (tap-drill Ø18.3) | STEP · STL |
| cap-2in-3-4npt | 2 in cap with a ¾ FNPT half coupling at the centre (tap-drill Ø23.4) | STEP · STL |
| cap-2in-3x1-4npt | 2 in cap with three ¼ FNPT half couplings on r 10.7 | STEP · STL |
| cap-2in-grommet-hole-12.7 | 2 in cap with a Ø12.7 (½ in) hole for an airlock grommet | STEP · STL |
| cap-2in-half-in-barb | 2 in cap with a ½ in hose barb (blow-off) | STEP · STL |
| cap-2.5in-1-8npt | 2½ in cap with a ⅛ FNPT half coupling at the centre (tap-drill Ø8.6) | STEP · STL |
| cap-2.5in-1-4npt | 2½ in cap with a ¼ FNPT half coupling at the centre (tap-drill Ø11.1) | STEP · STL |
| cap-2.5in-1-2npt | 2½ in cap with a ½ FNPT half coupling at the centre (tap-drill Ø18.3) | STEP · STL |
| cap-2.5in-3-4npt | 2½ in cap with a ¾ FNPT half coupling at the centre (tap-drill Ø23.4) | STEP · STL |
| cap-3in-1-8npt | 3 in cap with a ⅛ FNPT half coupling at the centre (tap-drill Ø8.6) | STEP · STL |
| cap-3in-1-4npt | 3 in cap with a ¼ FNPT half coupling at the centre (tap-drill Ø11.1) | STEP · STL |
| cap-3in-1-2npt | 3 in cap with a ½ FNPT half coupling at the centre (tap-drill Ø18.3) | STEP · STL |
| cap-3in-3-4npt | 3 in cap with a ¾ FNPT half coupling at the centre (tap-drill Ø23.4) | STEP · STL |
| cap-3in-3x1-4npt | 3 in cap with three ¼ FNPT half couplings on r 16.4 | STEP · STL |
| cap-3in-1.5in-port | 3 in cap with a 1½ in clamp nozzle at the centre, 1 in tall | STEP · STL |
| cap-4in-1-8npt | 4 in cap with a ⅛ FNPT half coupling at the centre (tap-drill Ø8.6) | STEP · STL |
| cap-4in-1-4npt | 4 in cap with a ¼ FNPT half coupling at the centre (tap-drill Ø11.1) | STEP · STL |
| cap-4in-1-2npt | 4 in cap with a ½ FNPT half coupling at the centre (tap-drill Ø18.3) | STEP · STL |
| cap-4in-3-4npt | 4 in cap with a ¾ FNPT half coupling at the centre (tap-drill Ø23.4) | STEP · STL |
| cap-4in-3x1-4npt | 4 in cap with three ¼ FNPT half couplings on r 21.9 | STEP · STL |
| cap-4in-1.5in-port | 4 in cap with a 1½ in clamp nozzle at the centre, 1 in tall | STEP · STL |
| cap-4in-1.5in-port-and-1-2npt | 4 in cap with a 1½ in clamp nozzle and a ½ FNPT half coupling | STEP · STL |
| cap-6in-1-8npt | 6 in cap with a ⅛ FNPT half coupling at the centre (tap-drill Ø8.6) | STEP · STL |
| cap-6in-1-4npt | 6 in cap with a ¼ FNPT half coupling at the centre (tap-drill Ø11.1) | STEP · STL |
| cap-6in-1-2npt | 6 in cap with a ½ FNPT half coupling at the centre (tap-drill Ø18.3) | STEP · STL |
| cap-6in-3-4npt | 6 in cap with a ¾ FNPT half coupling at the centre (tap-drill Ø23.4) | STEP · STL |
| cap-6in-3x1-4npt | 6 in cap with three ¼ FNPT half couplings on r 33.0 | STEP · STL |
| cap-6in-1.5in-port | 6 in cap with a 1½ in clamp nozzle at the centre, 1 in tall | STEP · STL |
| cap-6in-1.5in-port-and-1-2npt | 6 in cap with a 1½ in clamp nozzle and a ½ FNPT half coupling | STEP · STL |
| cap-8in-1-8npt | 8 in cap with a ⅛ FNPT half coupling at the centre (tap-drill Ø8.6) | STEP · STL |
| cap-8in-1-4npt | 8 in cap with a ¼ FNPT half coupling at the centre (tap-drill Ø11.1) | STEP · STL |
| cap-8in-1-2npt | 8 in cap with a ½ FNPT half coupling at the centre (tap-drill Ø18.3) | STEP · STL |
| cap-8in-3-4npt | 8 in cap with a ¾ FNPT half coupling at the centre (tap-drill Ø23.4) | STEP · STL |
| cap-8in-3x1-4npt | 8 in cap with three ¼ FNPT half couplings on r 44.5 | STEP · STL |
| cap-8in-1.5in-port | 8 in cap with a 1½ in clamp nozzle at the centre, 1 in tall | STEP · STL |
| cap-8in-1.5in-port-and-1-2npt | 8 in cap with a 1½ in clamp nozzle and a ½ FNPT half coupling | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=tri-clamp-ported-end-caps
Fits with
Free
Tri-clamp dome lids: 1½ to 12 in, plain or with a port at the crown8 sizes★ 16 filesFree
Tri-clamp thermowells: 1½ and 2 in clamp, 2½ to 12 in insertion, ½ NPT top10 sizes★ 10 filesFree
Tri-clamp × hose barb adapters (14MPHR style): ½ to 4 in clamp, ¼ to 4 in hose18 sizes★ 18 filesFree
Tri-clamp × female NPT adapters (22MP style): ½ to 4 in10 sizes★ 10 filesFree
Tri-clamp vessels with a dished or round welded bottom: 4, 6 and 8 in, 12 to 24 in deep3 sizes★ 18 files
Questions
Which cap for an airlock?
The 1½ in or 2 in cap with the Ø12.7 hole takes a ½ in airlock grommet; or use a 1½ in clamp port and an airlock cap on it.
Which cap for a thermometer?
A ½ NPT port takes a ½ NPT bimetal thermometer or a thermowell; or use a tri-clamp thermowell on a clamp port.