A new air-piloted, thermoplastic 3-way valve with position indication/verification from Plast-O-Matic Valves is designed to toggle between two isolated ports opposite a common port. Unlike many 3-way valves, usage of two different corrosive or ultrapure liquids through the same valve is feasible, as the two inlet/outlet ports are not shared. The valve has two inlets and one outlet. One inlet is normally open. Because this valve uses a “balanced design,” meaning all seal diameters are equal, it can also be used in reverse, with one inlet and two outlets. The “balanced design” also permits a wide range of pressure ratings—full vacuum to 100 psi—at any port whether inlet or outlet.