According to the link below, a part called the "mixer" is broken in our kitchen faucet aerator. The aerator seems to be working perfectly, just wondering:

1. what the MIXER is supposed to do and
2. should this whole thing be replaced?

https://www.askmehelpdesk.com/attachments/plumbing/19845d1242566532-leaky-faucet-because-aerator-aerator-parts.jpg

The mixer bleeds air into the end of the faucet. If everything is working don't worry. However, they are only a couple $$ at HD. Make sure to get one with the proper thread pitch if you decide to change.

Mixer aerates water. You will have a hard time getting just the mixer by itself. Why not to get new aerator that comes complete ? As suggested above, take the old aerator with you to Home Depot and get a new one. Costs $3.00.

Milo

Thank you!