Irrigation Kit Backbone T-Adapter

prusaprinters

<p>There are plenty of cheap home irrigation kits out there utilizing 5x7mm hoses (5mm inner, 7 mm outer aka 1/4") with dozens of sprinklers, droppers etc. These kits are made for a water pressure of 5 bar up.</p> <p>Utilizing such a kit with a smaller pump (e.g. caravan pump 12V 0.6 Bar) is not possible. The hose resistance is 6 Bar for 10 meters if you have a hose with 5 mm inner diameter. The sprinklers and droppers have an even smaller diameter. At the end of the day your pump overheats and you get only droplets in your pots.</p> <p>In comparison: With 10mm diameter the resistance of a 10meter hose is 0.6 bar. This is in the capability of the former mentioned caravan pump.</p> <p>My solution is to establish a 10mm 10meter water backbone from which my own T-pieces supply the original sprinklers/droppers.</p> <p>I designed two kinds of T-Pieces:</p> <ul> <li>Type 'Hose' provides a tube to attach a 5x7mm hose.</li> <li>Type 'Dropper' provides a thread to directly attach a dropper cap of the original kit.</li> </ul> <p>The current model is designed for a 10mm PVC hose as backbone (opens up to 13mm). You may change the diameter to your needs, since I included the STP files.</p> <p>This is a work in progress.<br/> I am struggling with this design. It may leak, it may pop hoses loose. Please give me feedback to improve.</p> <h3>Print instructions</h3><p>Print with the two tubes on the heatbed.<br/> No Supports needed.</p> <p>I had good results with Prusament Jet-Black PETG, but bad results with Prusament Urban-Gray PETG.</p> <p>Urban-Gray is in general a bit picky, the adhesion is bad and it comes out a bit "coarse".</p>