Schneider Electric (Barber Colman) AV-611 Linkage

The Schneider Electric (Barber Colman) AV-611 is a high-performance globe valve linkage designed for precise climate control in commercial hydronic systems. This linkage allows field technicians to secure SmartX Actuators—including the Mx41-6xx3 non-spring return and Mx40-704x spring return series—to VB-7xxx globe valves ranging from 1/2" to 2". It is engineered for longevity and maintains critical alignment between the actuator stroke and valve stem, ensuring accurate flow modulation. As the direct replacement for AV-603, AV-604, and AV-605 legacy models, the AV-611 offers a seamless upgrade path for maintaining aging infrastructure without requiring full valve body extraction. Its robust design supports both 2-way and 3-way configurations, providing the mechanical advantage necessary for high-close-off pressure applications. Whether you are performing a Schneider Electric actuator retrofit or a new installation, this linkage provides the reliable coupling required for integrated building management HVAC control systems.

• Broad Compatibility: Seamlessly links DuraDrive and SmartX actuators to 1/2" through 2" VB-7000 series valves and legacy 1/2" to 1-1/4" VB-9000 series models.
• Legacy Support: Serves as the official AV-611 replacement linkage for discontinued AV-603, AV-604, and AV-605 units, making it essential for service contractors.
• Precision Control: Maintains exact stem positioning and stroke calibration to prevent hunting and premature seat wear in globe valve assemblies.
• Durable Construction: Built to withstand the high-torque demands of spring-return actuators in demanding HVACR environments.

Is the AV-611 compatible with older Barber Colman valves?
Yes, the AV-611 is designed to interface with discontinued VB-9xxx series valves (1/2" to 1-1/4") in addition to current Schneider Electric globe valves.

What actuators fit the AV-611 linkage?
This linkage is specifically engineered for Mx41-6xx3 (non-spring return) and Mx40-704x (spring return) actuators. Always verify the actuator model suffix to ensure correct torque matching.

Can I use this for both heating and cooling applications?
Absolutely. The AV-611 is standard for hydronic HVAC systems and supports both 2-way and 3-way valve bodies regardless of the media temperature, provided the valve body itself is rated for the application.

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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.