V2 | Vacuum | Pump | Ejector | Venturi | 3/4 Gardena
Print Profile(2)
Bill of Materials
Description
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Hello everyone!
Following the great feedback on the first version, I present to you the big update: the V2 of my flow-optimized water jet pump.
The pump still utilizes the highly efficient Witošzyński profile internally for maximum suction performance with standard faucets. However, I have re-imagined the exterior to simplify 3D printing and make the system modular.
(If you prefer the old, one-piece design: You can find V1 here: https://makerworld.com/en/models/2774248)
What's new in V2?
- 100% Support-free printable: The design has been adapted so that the suction side now rests flat on the print bed. You no longer need any support structures!
- Higher volumetric flow: I have enlarged the cross-section of the suction pipe, which means the pump now extracts even faster and more volume.
- Modular Thread System: The suction side is no longer rigid but now has a thread.
- Hose Adapter Included: In the print files, you'll find the first attachment directly for a standard 13-mm garden hose. (For a perfect seal of the adapter, you only need a commercially available O-ring (12 mm outer diameter). I used a 12x2.4mm one.
Roadmap: What's coming next? The new thread is the cornerstone for an entire ecosystem that I will gradually upload here. Already planned are:
- More adapters for different hose sizes.
- A modular check valve.
- A dosing unit – this allows the pump to be brilliantly used as an admixer (e.g., to precisely add liquid fertilizer to water when watering).
Please let me know in the comments what other adapters or extensions you could use
Printing & Post-Processing Tip Print the model vertically in PETG or ASA with 100% infill so that it is water pressure resistant. My secret tip for absolute maximum performance: After printing, carefully guide a cold 3.5mm metal drill bit by hand through the inner front drive nozzle. This compensates for the smallest printing tolerances and ensures a razor-sharp, perfect "laser water jet" inside.
Have fun printing, pumping, and tinkering!
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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