Boston Aircontrols Inc has released a full line of valve actuator retrofit kits that can replace faulty or antiquated electronic and pneumatic actuators without any interruption of service. BAI-Belimo Electronic Actuator Retrofit Kits feature an actuator that is compatible with many control inputs and all direct digital control systems and includes the appropriate brackets and linkages. Suitable for HVAC systems where the valve bodies are in working condition, these kits allow valves to be upfitted without shutting down and draining the system. Available off-the-shelf for Johnson, Siemens, Barber-Colman, and Honeywell globe valves and most butterfly valve manufacturers, the retrofit kits permit communication with building control systems. They incorporate a proprietary multi-functional technology which provides the ability to program key characteristics of the actuator.