Printer parts

Double Drain Fitting STL Models for 3D Printing

This collection gathers STL files for double drain fittings and related adapters. You will find parts for appliance drains, sink and shower pipes, threaded hose connectors, and filament dryer fittings. It helps when you need to join two drain lines or adapt an existing pipe to a 3D printer setup. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

A Polyzon collection · 46 models from 3 platforms

How this collection is put together

Polyzon assembles this collection from search results on the connected platforms. Repeats and models without a preview are removed, weak matches go to the end, and the rest keeps the search order. Models belong to their authors — check the terms on each model's page.

Selection rules: the Polyzon editorial team · Text updated 2026-10-15

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About the category

«Double Drain Fitting STL Models for 3D Printing»

The models cover several practical groups. Double appliance connectors join a washer and dryer to one drain line, while sink, shower and caravan fittings adapt round or rectangular outlets to common pipe sizes. Parametric hose and threaded adapters let you set diameter or thread pitch, and double Bowden fittings are made for filament dryer lids. Waste and floor drain adapters often include extensions or traps.

Before printing, open the author's page and check the listed dimensions, scale and thread standard. Count the parts and see whether assembly uses screws, glue or press fits. Look at the material and settings the author notes, and review photos of real prints to judge wall thickness and overhangs. If the model needs supports, plan where they will touch sealing surfaces.

To narrow the search, try synonyms such as drain connector, hose adapter, pipe reducer, dual outlet, Y-fitting or T-fitting. Add the pipe size or thread type if you know it. Related topics include sink traps, washing machine drains, filament dryer ports and parametric plumbing parts. Combining a use case with a connector type usually gives a shorter list.

FAQ

Frequently asked questions

What is a double drain fitting used for?
It usually connects two drain sources, such as a washer and dryer, into one pipe or hose. Some versions instead split one drain line into two outlets.
How do I choose the right thread or diameter?
Measure the pipe or hose you need to join and compare it with the dimensions on the model page. Thread standards vary, so check whether the author lists the profile and pitch.
Do these models need supports?
It depends on the shape and orientation. Fittings with horizontal bores or overhanging threads often need supports, while simple sleeves may print without them. The author's page usually shows the intended orientation.
Can I scale a drain fitting in my slicer?
Scaling changes both the outside shape and the thread or socket size, so it may no longer match the pipe. If the model is parametric, editing the source dimensions is often better than uniform scaling.
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