Parametric 32 mm Pool Filter Hose Bulkhead Connector
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Parametric pool-wall fitting with an O-ring hose connection, pressure plate and hand-tightened nut.
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Other House Equipment
- Licencja
- Creative Commons — Public Domain
Parametric 32 mm Pool Filter Hose Bulkhead Connector
A fully parametric bulkhead fitting for connecting a 32 mm filter hose through the flexible wall of a small inflatable pool.
The connector is inserted from inside the pool. An outer pressure plate supports the pool wall, while a large hand-tightened nut clamps the assembly
together. The nut rotates against the pressure plate instead of rubbing directly against the pool liner.
The smooth 32 mm hose tube includes a configurable groove for a rubber O-ring. It is designed for hoses with a short enlarged sealing section and can also be secured with a hose clamp.
Included parts
- Inner flange with threaded body and 32 mm hose tube
- Outer pressure plate
- Large six-lobe hand-tightened nut
- Parametric OpenSCAD source
- Combined print layout
Default dimensions
- Hose tube outside diameter: 32 mm
- Flow diameter: 25 mm
- Pool wall hole: 41.5 mm
- Thread: M40×3
- Inner flange: 70 × 5 mm
- Outer pressure plate: 70 × 4 mm
- O-ring cross-section: 1 mm
All important dimensions can be changed using the OpenSCAD Customizer.
Printing recommendations
- PETG or ASA recommended
- Avoid PLA for parts exposed to heat and direct sunlight
- Print the inner connector with its flange on the build plate
- Print the nut and pressure plate flat
- No supports should be required
- Use several perimeters for a strong and watertight tube
- Test the threaded fit before final assembly
The female_thread_scale parameter can be adjusted to compensate for your printer’s thread tolerance.
Assembly
1. Cut a correctly sized hole in the pool wall.
2. Insert the main connector from inside the pool.
3. Slide the outer pressure plate over the threaded section.
4. Screw on and tighten the hand nut.
5. Fit the rubber O-ring into the hose-tube groove.
6. Push on the hose and secure it with a suitable clamp.
7. Perform a leak test before regular use.
Cutting or modifying a pool liner is done at your own risk.
Credits and dependencies
The M40×3 threads are generated using Threadlib v0.5 by Adrian Schlatter and contributors:
https://github.com/adrianschlatter/threadlib
Threadlib is distributed under the BSD 3-Clause License. Install it in your OpenSCAD library folder or keep the included threadlib directory next to the model source.