A lot of brass fittings and fixtures with lead in them. Makes it easier to machine.
I wouldn’t be surprised if a lot of no-name Amazon and aliexpress plumbing fixtures still have a lot of lead in them. Keeps your cutting tool/machining costs down.
Even big box stores that are careful sell a lot of high lead plumbing parts - they are just marked not for potable water and sold for use with gas pipes.
I wouldn’t be surprised if a lot of no-name Amazon and aliexpress plumbing fixtures still have a lot of lead in them. Keeps your cutting tool/machining costs down.