Small Garden Care is really fun

The Y shape Tap has an exact thread for common soda bottles (Pepsi, Cola and many others). Printing is easy and supports are not required.  

Printing: All together there are 4 items to print.  It is suggested to print the Bottlecap (the Y shape Tap) and the Funnel Filter using PLA,  but the two other items: Grommet and Cover it is highly recommended to  use TPU which is flexible enough for sealing the main inlet and the thin outlet. Use Resolution of 0.15 on all items. Printing position / direction are as depicted on the pictures.

Assembling: After printing the Bottlecap (the Y shape Tap) some residue may need to be cleaned out the thread side, this is easy and can be done with a small cutter, then inset the Grommet to the thread end. The Funnel Filter is manually pressed into the Y Tap thick outlet however I found that using contact glue between those two parts helps completely sealing this coupling area.