Abstract: An example ball valve includes a body defining a first valve port and a second valve port circumferentially offset from each other on the body by 180°. A valve member is positioned within the body and defines an inlet port and first and second outlet ports extending perpendicularly from the inlet port in opposing directions. First and second sealing elements are mounted on the valve member within corresponding first and second annular grooves, the first and second sealing elements being circumferentially offset from each other on the valve member by 180° and circumferentially offset from the first and second outlet ports by 90°. First and second seal systems are positioned within the first and second valve ports, respectively, and each include a valve seat engageable with the first and second sealing elements, a boost piston, and a bias spring.