45x Barbed Hose Adapters – from 1/4" to 2"

Hose Adapter Collection – 45 Barbed Hose Reducers

A complete collection of 45 different barbed hose adapters and reducers, covering hose sizes from 1/4" up to 2".

The collection includes both same-size connectors and different-size reducers, allowing you to connect almost any combination of the supported hose sizes.

Simply push the hose over the barbed end and secure it with a suitable hose clamp for a strong and secure connection.

📦 What's included

The collection contains 45 unique adapters covering:

• 1/4" (6 mm)

• 3/8" (10 mm)

• 1/2" (13 mm)

• 5/8" (16 mm)

• 3/4" (19 mm)

• 1" (25 mm)

• 1 1/4" (32 mm)

• 1 1/2" (38 mm)

• 2" (50 mm)

Each size is available in combinations with the other sizes, including same-to-same connections such as:

1/2" → 1/2"
3/4" → 3/4"
1" → 1"
1 1/2" → 1 1/2"
2" → 2"

And reducers such as:

1/4" → 1/2"
1/2" → 3/4"
1/2" → 1"
3/4" → 1"
1" → 1 1/2"
1 1/2" → 2"

…and all other unique combinations within the size range.

🔧 Design

The adapters feature barbed hose ends designed to provide good grip on the hose. The central flange makes the adapter easier to handle and provides additional strength.

The internal passage transitions smoothly between the two hose sizes.

Hose clamps are recommended to secure the hose and prevent leaks or the hose from coming off.

🖨 Recommended print settings

Material: PETG recommended
Layer height: 0.20 mm
Walls: 4–6 perimeters
Top/Bottom layers: 5+
Infill: 30–40%
Supports: required for better quality

Print orientation

Print the adapter horizontally, with the hose connection running parallel to the build plate.

This orientation gives the barbs and central body good dimensional accuracy and keeps the print easy to produce without supports.

For larger adapters, increasing the number of walls to 6–8 can improve strength.

💧 Recommended materials

PETG – recommended for general-purpose use and better toughness than PLA.

ABS / ASA – suitable when higher temperature resistance is required.

PP – excellent for flexible and chemically resistant applications if your printer supports it.

PLA can be used for prototypes and low-stress applications, but it is not my first choice for water connections or applications exposed to heat.

🔩 Applications

These adapters can be useful for:

• Garden hoses

• Water lines

• Irrigation systems

• Pumps

• Air lines

• Workshop projects

• DIY plumbing

• Aquariums

• Hydroponics

• Custom tubing systems

• General hose connections

⚠ Important

The dimensions listed are based on nominal hose inner diameters. Actual hose dimensions and flexibility vary between manufacturers, so always test the fit with your specific hose.

For pressurized applications, always use an appropriate hose clamp and test the printed adapter before putting it into service.

This model is intended as a 3D-printable DIY adapter and should not be used for critical or high-pressure systems without appropriate testing.

If you find this collection useful, a MakerWorld boost is greatly appreciated! ❤