Hose Barb Connector / Reducer (Barb–Barb) — Parametric (3D Print)

🔖 Art. ML3D_0009

🔖 Art. ML3D_0009 Parametric hose barb connector / reducer — barb on both ends — by MarineLab3D. Join two rubber hoses (same size or reducing) with a central hex grip. For 3D printing in PETG or PA12. 🪝 Hose A & B inner diameter: 6 to 60 mm (choose each side independently) ⬡ Central hex grip auto-sized to the larger hose ↔ Stepped through-bore between the two sides 🔩 Barbed tails (3–4 ridges) sized to the hose inner diameter Use “Customize dimensions” to set both hose sizes, preview in 3D, then receive your STL after purchase. ⚠️ PRESSURE USE (above ~1 bar): print in PETG (not ASA — better layer sealing), with SOLID walls (enough perimeters to fully fill the wall thickness — do not rely on infill), Z-seam set to “Scarf joint”, low part-cooling fan, flow +2–3%, and the thread/seam axis VERTICAL. Most onboard plumbing systems run at max ~3 bar: at this level these print settings + a GENEROUS amount of PTFE tape / thread sealant on the threads are enough. Always pressure-test at ~2× working pressure before use. Only for pressures above ~4 bar: also brush a thin coat of epoxy resin inside for a guaranteed seal. A 3D-printed fitting is a valid solution but always verify it for your specific application. 🖨️ No 3D printer? After your purchase, on your download page you can request an instant print quote: your model is sent pre-loaded to our partner Craftcloud, which compares ~180 print services worldwide and ships the finished part to your door — no printer or setup required. 📄 License — Personal use only. Print this model for your own personal use. Reselling or redistributing the file, or selling printed copies, is not allowed. © MarineLab3D — full terms: https://marinelab3d.com/pages/license

Related designs: Elbow Hose Barb Connector / Reducer — Parametric (3D Print), 3-Way T Hose Barb Connector — Parametric (3D Print), BSP Hose Barb Fitting — Parametric (3D Print)

Disclaimer. MarineLab3D sells digital 3D files, not finished parts. The strength, fit and safety of the printed part depend on your printer, material, settings and assembly, which are outside our control. Verify all dimensions before printing, use the recommended material and inspect every print. Provided “as is” without warranty; to the maximum extent permitted by law MarineLab3D is not liable for any damage, loss or injury arising from their use. Not certified marine equipment. Full Disclaimer & Terms of Use.

⚠ Load-bearing / pressure part. Suggested loads or pressures are indicative estimates for a well-printed part in the recommended material, not guarantees. Run your own load/pressure test before relying on it. Do not use for life-safety or critical applications (lifelines, harness/tether attachment, standing rigging, steering, gas or fuel systems) unless independently tested and certified by a qualified professional.