Profile: Blackhawk Supply specializes in providing sensors, thermostats, plastic fittings, and safety switches. Our products include ball valves, control valves, globe valves, valve actuators, pressure independent valves, and dual pressure controls. We offer a wide range of electrical parts & materials including wires, transformers, electrical controls, and power supplies. VMP Electronic 2-Way and 3-Way Valves control water and glycol solutions. Removal of the cap from the bottom bypass port (III) converts this valve assembly to a 3-way valve.