I recently had my water heater replaced with a tankless unit. It's an old house and during the install one of the valves started leaking, the contractor used a temp fix to connect it to the non leaking valve with a hose. I want to replace both valves but not sure what type of valve it is. It looks like a hose bib or some kind of gate valve. Questions: These water lines are going into the water heater so the valves should be lead free correct? A utility sink and washer/dryer will most likely be tapped into the same water lines in the future, how can I future proof this? What type of valves should I buy to replace these? Amazon links to good quality valves would be appreciated.