3880 chip resetter that works

Just to share with you what is the outside valve...it's like others espon cart, it's working just to stop ink flow outside the cart.

But now there is inside, another valve system, i would like to understand how is working and make same hole in it to let us refilling the bag inside...

for now the only problem i see it's to make a hole without broke the spring plastic base inside down the conduct.