Fiamma aqua 8 pump piston replacement

thingiverse

I have a Fiamma Aqua 8 water pump, which lost lots of its pumping capacity. Turns out the three acryllic(?) "pistons" inside were cracked and broken to pieces. Replacements are available at Fiamma, but not these pistons as a set, you get almost half a pump when you order the part number. It costs almost 50 euros! I printed these pistons in ABS with a 0.2mm layer height, 35% infill and 3 outline perimeters as well as 3 top and bottom layers.