VEB-43 (formerly VEP-45) series, two-way and VEB-46 (formerly VEP-436) series, three-way NPT, ball valves are designed for the control of hot or chilled water in HVAC applications. Valves range in size from 1/2 to 3 inches feature an optimizing insert, which reduces the Cv and characterizes the ball opening for equal percentage flow characteristics. These valves include a field-repairable blowout- proof stem and leak-proof shut-of. The reduced torque seals and O-rings eliminate the need for high torque actuators and actuators require only low torque of the MEP-4000 series valves for all sizes. The standard connection is NPT optionally have to weld or BSP. It sizes ½” to 2”and has several Cv for each gauge, according to the model of the insert. The actuators may be modulating or floating.