Air massage valve for tub/shower hydromassage Revita Sergio Lanna

Having broken two of the 14 valves for the air blow of my REVITA hot tub hydromassage and not finding them as spare parts, they are printed in 3d.
The valve is composed of two parts with a plastic ball inside and an oring on the edge. both the oring and the ball have recovered from the broken valve but if you want they are easily found on the market. I have created the two parts that are screwed for convenience.