Description
The Johnson Controls VA9104-IGA-3S Electric NSR Valve Actuator with Time Out is a small and full-featured device for controlling valves in HVAC systems. A 0-10VDC signal is used for positioning of the related valve, which controls the flow of water or air in the HVAC system. When a signal is applied, If the signal fails to last in the given timescale, the actuator gets back the valve into the mid-point state. This time out function can be useful to avoid high energy consumption or valve operation at undesired time. The NSR (Non-Spring Return) design means that when power is switched off, the valve stays in the last position, either open or closed.
