The Johnson Controls VA-4233-AGA-2 Electric Valve Floating Actuator is a small and mighty device that is built for strength and flexibility to smoothly control valves in HVAC systems where space is a constraint. It draws its power from a standard 24V AC power supply and uses a floating control signal for flexibility. Upon receipt of a signal, the actuator generates a force of up to 75 PSI to open or close a linked valve through a specific half-inch travel. The VA-4233-AGA-2 is intended for operation at temperatures between -40°F to 140°F, is of rugged construction and is ideal for any HVAC application where there is need to control the flow of water or air.
The Johnson Controls VA-4233-AGA-2 stands as an exemplary direct-mount, spring-return electric valve actuator, meticulously crafted to excel in the intricate realm of HVAC applications. This sophisticated device is engineered to seamlessly control valves, showcasing Johnson Controls' commitment to precision and reliability. The actuator's direct-mount feature ensures a seamless integration with valves, enhancing efficiency and simplifying installation processes. Its spring-return mechanism adds an extra layer of functionality, contributing to optimal valve positioning and facilitating smooth operations. With a keen focus on technological prowess, this VA-4233-AGA-2 Johnson Controls actuator proves instrumental in maintaining environmental conditions, making it an indispensable component for HVAC systems seeking precision, reliability, and cutting-edge performance. The VA-4233-AGA-2 is a testament to Johnson Controls' dedication to innovation and excellence in the field of valve control technology.
Key features:
Controls valves: Opens and closes valves in response to an electrical signal, regulating fluid flow in HVAC systems.
Spring-return: Automatically returns the valve to the full stem-up position in case of power failure, ensuring safety and preventing overheating or overcooling.
Floating control: Maintains the valve in any desired position between fully closed and fully open, allowing for precise control of fluid flow.
Direct-mount: Attaches directly to Johnson Controls VG7000 Series bronze control valves, eliminating the need for separate linkages.
Compact size: Saves space and simplifies installation.
Powerful: Delivers 61 lb-in (271 N) of torque for effective valve operation.
Durable: Built to withstand harsh HVAC environments.
Wide voltage range: Operates on 24 VAC power.
Automatic stroke calibration: Automatically adjusts settings for optimal valve control during installation (VA-4233-GGx models only).
Reversible stroke direction: Can be configured for direct or reverse valve action (VA-4233-GGx models only).
Auxiliary switches: Optional switches provide additional control functions and feedback signals.
Hand crank: Allows manual positioning of the valve even without power.
Signs of a Faulty Johnson Controls Acutator
Inconsistent flow: The valve doesn't fully open or close, leading to fluctuating or insufficient fluid flow.
Leaking: Water or steam leaks around the valve or actuator, indicating seal failure.
No flow: The valve remains completely stuck in one position, regardless of the electrical signal.
Humming or buzzing: Unusual sounds emanating from the actuator suggest internal electrical or mechanical issues.
Erratic movement: The valve opens or closes unexpectedly, not responding smoothly to the electrical signal.
Stuck actuator: The actuator doesn't move at all, regardless of power or manual attempts.
Excessive vibration: Uncharacteristic vibration during operation might indicate internal component wear or imbalance.
Temperature control issues: The HVAC system struggles to maintain desired temperatures due to inconsistent valve operation.
Equipment malfunction: Other HVAC components might malfunction due to disrupted fluid flow (e.g., pumps, boilers).
Error codes or alarms: Some systems might display error codes specific to valve actuator malfunctions.
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