I have an old Omnifilter SMF2 under the sink water filter that I am needing to connect. The people who redid my kitchen plumbing installed a dedicated 1/2" cold water supply line and I need it to connect to the filter cartridge housing. The problem is that all of the new fittings that I ordered are all quick connects for a 3/8" pvc tubing (I have this John Guest faucet connector). What part do I need to connect a 1/2" thread male cold water supply to a quick connect housing that takes 3/8" tubing (this is the part that is currently on the filter cartridge housing)
I've attached a photo of the dedicated water line that has the 1/2" threaded male part. Thank you.