I am a new brewer, and have made about four batches, all extract. I have recently acquired a full size three tap kegerator. I have taken the tower apart and removed the faucets in order to install new beer lines. While inspecting the faucets I noticed the O-rings were dried out and cracking. I did find O-ring replacement kits (as these are standard American faucets) for $7.50. However, I also noticed what appears to be corrosion or tarnish on the inside of the faucets. I have attached photos. The photos are after cleaning with super grunge remover. My question is, are they safe to use, or will the tarnish and (what looks like rust on one of them), make the beer taste metallic? There is nothing I hate more than metallic beer. In addition to the tarnish, one of the faucets goose necks is bent. It looks like someone squeezed it with a pair of pliers. Will this cause foaming in the line?
Thank you for any advice.