Versatile and durable My 3 Way Brass Ball Assemblies Valves have and can serve critical purposes for systems plumbing as well as for HVAC and Industrial systems. Their ability to reserve or mix flows from two or more lines adds to their usefulness even more in complex piping systems. Their use of brass construction gives them protection from the abrasion and corrosion from gas, oil, and water, thus ensuring durability. Like with us, Innovation is the continuous improvement of the design to solve current issues.