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Printable tri-clamp (45°): brewing sensor lids: 4, 6 and 8 in caps with every port a fermenter needs

Name: Printable tri-clamp (45°): brewing sensor lids: 4, 6 and 8 in caps with every port a fermenter needs dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What lid lets me log temperature, pH, CO₂ and pressure from the top of a tri-clamp fermenter (3D printable)? · Hardware · basis: Xem Studio design: Xem Studio design on the standard solid cap of each size: a 1½ in clamp port at the centre and a ring of PG13.5 probe ports, Ø6 O-ring probe glands, ¼ NPT half couplings and a ½ in hose barb; printable 45° back cone

Also called: fermenter sensor lid tri clamp printable, 6 inch tri clamp lid with ports printable, brewing data logging lid printable, 3d printed tri clamp, 3d printable tri clamp, tri clamp stl, printable tri clover

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

sizes: 5 in table

Notes

3D-printable tri-clamp: this is Xem Studio's print-friendly version of the standard sanitary fitting, drawn so it prints on an ordinary FDM or resin printer with no supports. Download the STL to print it, or the STEP to edit it. The files are true size (no printing allowance): add your own clearance in the slicer or CAD if your printer needs it.
For a vessel that can only be fitted through the top. Centre 1½ in clamp: a bubbler gravity cap, a thermowell, a dip tube, a carb stone or a racking cap. PG13.5 ports: pH, dissolved O₂ or CO₂ probes. Ø6 glands: temperature probes at two depths. ¼ NPT: a pressure transducer or gauge and a gas-in valve (nitrogen or CO₂). Barb: blow-off hose, or a gas-flow meter on the CO₂ coming off.
Weight is read with the vessel on a scale; gravity can be read with the bubbler cap instead of a floating hydrometer.
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.

Printable tri-clamp (45°): brewing sensor lids: 4, 6 and 8 in caps… size chart

size (in)	layout	clamp 1.5in	pg13.5	glands 6mm	npt 1/4	barbs
4	basic	1	1	1	1	1
6	basic	1	1	1	1	1
6	full	1	2	2	2	1
8	basic	1	1	1	1	1
8	full	1	2	2	2	1

Where the files are

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

DIN	DIN 40430 Pg (Panzergewinde) threads: PG13.5 Ø20.4 major, 1.41 pitch (18 tpi), Ø18.6 core; the thread of 12 mm process probes (pH, dissolved O2 / CO2)	standard	DIN; dimensions 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
Dixon	14MPHR brewery hose barb: A and barb OD B (hose ID + 0.040 in) per size, ½ to 6 in	PDF	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)	PDF	maker chart; dimensions are facts verify

Free files

★ Free files 5 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

sensor-lid-4in-basic-45	4 in sensor lid (basic): 1½ in clamp port at the centre; on r 34: PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb — printable, 45° rims	STEP · STL
sensor-lid-6in-basic-45	6 in sensor lid (basic): 1½ in clamp port at the centre; on r 52: PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb — printable, 45° rims	STEP · STL
sensor-lid-6in-full-45	6 in sensor lid (full): 1½ in clamp port at the centre; on r 52: PG13.5 probe port, PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb, Ø6 probe gland, ¼ FNPT — printable, 45° rims	STEP · STL
sensor-lid-8in-basic-45	8 in sensor lid (basic): 1½ in clamp port at the centre; on r 70: PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb — printable, 45° rims	STEP · STL
sensor-lid-8in-full-45	8 in sensor lid (full): 1½ in clamp port at the centre; on r 70: PG13.5 probe port, PG13.5 probe port, Ø6 probe gland, ¼ FNPT, ½ in blow-off barb, Ø6 probe gland, ¼ FNPT — printable, 45° rims	STEP · STL

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.

Set it up →

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

Printable tri-clamp (45°): brewing sensor lids: 4, 6 and 8 in caps with every port a fermenter needs, isometric render of a generated part — Render of sensor-lid-6in-full-45 from the free STEP; not to scale.

Fits with

Free

Tri-clamp brewing sensor lids: 4, 6 and 8 in caps with every port a fermenter needs, isometric render of a generated part

Tri-clamp brewing sensor lids: 4, 6 and 8 in caps with every port a fermenter needs5 sizes★ 5 files Free

Tri-clamp bubbler gravity caps: measure specific gravity from the lid with two dip tubes, isometric render of a generated part

Tri-clamp bubbler gravity caps: measure specific gravity from the lid with two dip tubes6 sizes★ 6 files Free

Tri-clamp caps with PG13.5 probe ports (12 mm pH, dissolved O₂ and CO₂ probes): 1½ to 4 in, isometric render of a generated part

Tri-clamp caps with PG13.5 probe ports (12 mm pH, dissolved O₂ and CO₂ probes): 1½ to 4 in5 sizes★ 5 files Free

Tri-clamp probe gland caps: Ø4, Ø6 and ¼ in probes, 1 to 3 per cap, isometric render of a generated part

Tri-clamp probe gland caps: Ø4, Ø6 and ¼ in probes, 1 to 3 per cap18 sizes★ 18 files Free

Tri-clamp vessels with a dished or round welded bottom: 4, 6 and 8 in, 12 to 24 in deep, isometric render of a generated part

Tri-clamp vessels with a dished or round welded bottom: 4, 6 and 8 in, 12 to 24 in deep3 sizes★ 18 files Free

Tri-clamp dome lids: 1½ to 12 in, plain or with a port at the crown, isometric render of a generated part

Tri-clamp dome lids: 1½ to 12 in, plain or with a port at the crown8 sizes★ 16 files Free

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

Questions

Can I 3D print this?

Yes. It is the 3D-printable version: every overhang is 45° or steeper, so it prints without supports, and the sealing face is standard ISO 2852, so a normal gasket and clamp fit.

Which lid for a 6 × 18 in vessel?

The 6 in full lid: two probe ports, two temperature glands, two ¼ NPT ports, a blow-off barb and a 1½ in clamp port in the middle.