Schneider Electric (Barber Colman) AV-390 Valve linkage

The Schneider Electric (Barber Colman) AV-390 Valve linkage is a critical sub-assembly designed for field integration of gear train actuators with VB-7XXX and VB-9XXX series valve bodies. This specialized AV-390 common parts kit includes a high-precision cam, plunger, and stem extension kit, providing the essential mechanical interface required for effective fluid control in commercial HVACR systems. As a veteran-grade valve linkage sub-assembly, it is engineered to support actuator components like the AV-91, AV-92, AV-93, and AV-94, ensuring seamless operation for both current and legacy Invensys Barber-Colman installations. The heavy-duty die-cast aluminum mounting bracket maintains rigid alignment, while the built-in valve position indication allows for immediate visual verification of stem travel and seating. For contractors managing steam or hydronic applications, this linkage facilitates reliable proportional control by converting rotary actuator motion into precise linear stem movement, maximizing the close-off pressure performance of the integrated valve assembly.

Key Benefits

• Broad Compatibility: Engineered specifically to adapt Schneider Electric gear train actuators to a wide range of 1/2" to 4" VB-7XXX series and VB-9XXX valve bodies.
• Technical Precision: Features a cam and plunger design that optimizes torque delivery, ensuring the stem achieves full stroke even under high differential pressure.
• Extreme Durability: The die-cast aluminum construction provides superior corrosion resistance and structural integrity in demanding mechanical room environments.
• Standardized Position Indication: Includes integrated valve position indicators to simplify troubleshooting and routine system maintenance for field technicians.
• Legacy Support: A go-to solution for retrofitting older Barber-Colman equipment, allowing for the re-use of functional valve bodies with updated actuator linkages.

Common Questions

The AV-390 serves as a common parts kit and is required when building complete linkages for Schneider Electric MA, MP, and MC series gear train actuators. It is used in conjunction with specific sub-kits like the AV-91 or AV-93 to match the required stem force and actuator torque.

Yes. When used in steam systems, technicians should ensure the valve stem is mounted at a 45-degree angle from vertical if ambient temperatures near the actuator limits are expected, following standard HVACR installation practices.

This kit includes the cam, plunger, and stem extension components. For a complete field assembly, it is typically paired with a die-cast mounting bracket provided in the associated AV-9x series sub-assemblies to secure the actuator to the globe valve.

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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.