Schneider Electric (Barber Colman) AV-430 Linkage

The Schneider Electric (Barber Colman) AV-430 Linkage is a heavy-duty mechanical interface designed for field assembly of pneumatic valve actuators to globe valve bodies. Built with a die cast aluminum mounting bracket, this kit provides the structural rigidity required for reliable HVAC control valve modulation. It is specifically engineered to bridge MK-66X1, MK-68X1, and MK-6911 actuators with two-way and three-way valve bodies ranging from 1/2" to 6" in size. This linkage kit ensures precise stroke transmission, allowing for accurate close-off pressure performance in steam and water applications.

For technicians managing legacy systems, the AV-430 is the standard pneumatic actuator linkage for retrofitting obsolete MK-47X1 actuators. It includes a integrated valve position indicator, providing clear visual feedback on stem travel and system status. By maintaining exact alignment between the actuator and the VB-7xxx, VB-8xxx, or VB-9xxx valve series, this hardware prevents premature packing wear and ensures consistent flow characteristics across high-demand industrial and commercial heating and cooling loops.

• Compatible with broad range of Schneider Electric and Barber Colman components including MK series actuators and VB valve bodies.
• Features a high-strength die cast aluminum mounting bracket for professional-grade durability in high-vibration environments.
• Simplified field assembly process for 1/2" through 6" valve sizes, reducing downtime during maintenance.
• Integrated valve position indication allows for rapid visual troubleshooting and calibration checks.
• Provides the mechanical stability necessary to achieve rated close-off pressure and ANSI Class IV leakage standards.

Is the AV-430 compatible with older Barber Colman MK-4700 series actuators?
Yes, this linkage is the primary solution for mounting legacy MK-47X1 pneumatic actuators to modern valve bodies, ensuring long-term serviceability of older installations.

Does this kit include the mounting nuts for the valve body?
The AV-430 linkage typically utilizes the existing hex mounting nut on the valve body; however, for specific 2-1/2" to 6" VB-9xxx valves manufactured before 1986, the packing nut may require replacement during installation.

Can I use this linkage with electric actuators?
No, the AV-430 is specifically designed for pneumatic actuator mounting. For electric or electronic actuators, refer to the AV-800 series or specific Schneider Electric compatibility charts.

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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.