Johnson Controls VA-4233-601 Hardware Kit

The Johnson Controls VA-4233-601 Hardware Kit is an essential field-replacement assembly engineered for the VA-4233 Actuator Series. As a veteran technician knows, maintaining precise valve positioning in HVACR control systems requires high-tolerance linkage components. This direct-mount kit includes a manual hand crank for local override, ensuring you can position the valve stem even during a power loss or for AUTO stroke calibration setup. The hardware is designed to interface seamlessly with VG7000 Series Bronze Control Valves, providing the mechanical integrity needed for 61 lb force output applications.

Built for the rigors of chilled water, hot water, and steam service, this kit replaces the critical wear points found in proportional valve actuators. The inclusion of the special stem nut and jam nut ensures a secure, slip-free connection between the stepper motor drive and the valve stem. Using the yoke screw provided, contractors can achieve the exact 1/2-thread clearance required for optimal spring return performance and stroke accuracy, eliminating common hunting issues in DDC systems.

Key Benefits

• Field-Ready Compatibility: Specifically sized for VA-4233 Actuator series to ensure zero-slop mechanical linkage.
• Manual Override Capability: Included manual hand crank allows for emergency positioning and auxiliary switch adjustment.
• Steam & Water Rated: Durable Johnson Controls hardware components maintain structural integrity in high-temperature steam applications.
• Non-Linkage Design: Simplifies the mounting process to VG7000 series valves, reducing labor time during actuator retrofits.

Common Questions

Is this kit compatible with other actuator brands?
This hardware is purpose-built for the Johnson Controls VA-4233 series. While it may fit select Invensys valves when used with specific mounting kits, it is optimized for the VA-4233 and VG7000 series architecture.

Do I need to recalibrate the actuator after installing these parts?
Yes. On proportional (GGx) models, once the special stem nut and jam nut are secured, you should initiate the AUTO stroke calibration to ensure the controller accurately maps the 0-10V or 4-20mA signal to the physical valve travel.

How do I use the hand crank for manual positioning?
Depress the manual override socket on the actuator face, insert the crank, and rotate to the desired position. Use the "Lock Area" engraving to hold the position during maintenance or testing.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.