OpenValve - Print-Yourself ASA Parts

Here are all 3D-printed ASA parts for OpenValve that can either be self-printed or purchased with the OpenValve Assembly Kit.

OpenValve is an open-source irrigation controller, built around a custom designed pinch-valve mechanism and optimized entirely for 3D printing. For more info check the github page.

👉 GitHub: https://github.com/fabiansteiner/OpenValve

Filament

All parts MUST be printed in ASA.
Other filament types like PETG & ABS were tested but they do not work reliably.

The following materials have been officially tested and approved for OpenValve:

• Fiberlogy ASA

• Prusament ASA

For both filaments use the slightly adapted Prusament ASA filament profile which can be found in the .3mf PrusaSlicer projects. (PrintYourselfC1.3mf, PrintYourselfC1L.3mf)

Using other ASA filaments can work perfectly fine. But be aware that untested filaments could cause problems like reduced durability due to slightly different material compositions and properties.

⚠ Do not use dark filament colors if you intend to use OpenValve outdoors in direct sunlight. Dark colors heat up to higher temperatures under the same conditions and may deform over time.

Print instructions

PrusaSlicer projects & gcode files are available for Core One /+ and Core One L.

If available use the g-code directly. This will lead to the most repeatable results and prevents possible slicing mistakes. The g-codes were sliced for simple 0.4mm nozzles, but can be also printed with a HF nozzle without any issues. 

Before printing, ensure that both the nozzle and print sheet are clean to achieve a high-quality first layer. A properly formed first layer is essential for watertightness: one of the O-rings seals directly against the first layer of the housing. If the nozzle is positioned too high during the first layer, the resulting gaps can allow water to seep past the seal.

I highly recommend using an adhesive like 3DLAC to prevent warping and to ensure a smooth seperation from the bed, especially when printing on the smooth or textured print sheet.

With an enclosure, the parts can likely also be printed using other prusa printers. But the temperature inside of the enclosure should reach a minimum 45°C while printing.

Recommended global print setting

• Layer height: 0.2 mm (STRUCTURAL)

• Infill: 100%

• Infill pattern: Rectilinear

• Perimeters: 4

• Fuzzy skin thickness: 0.2mm

• Fuzzy skin point distance: 0.6mm

• Filament (Applicable for all ASA filaments)

  • Shrinkage Compensation XY: 0

  • Shrinkage Compensation Z: 0

  • Disable fan for the first: 1 layers

Part specific print settings

Nut_scaled

print twice.

Housing_Down

• Enable Ironing: yes

• Ironing Type: Topmost surface only

• Brim: only if needed

• Paint-on seam: (see GIF)

• Paint-on fuzzy skin:  (see GIF)

Housing_Up

• Enable Ironing: yes

• Ironing Type: Topmost surface only

• Brim: only if needed

• Paint-on seam: (see GIF)

• Paint-on fuzzy skin:  (see GIF)