Schneider Electric (Barber Colman) AV-393 Valve linkage

The Schneider Electric (Barber Colman) AV-393 Valve Linkage Kit is a heavy-duty field assembly solution designed to interface gear train actuators with high-performance globe valves. Engineered for 300 lb stem force applications, this complete linkage kit provides the necessary mechanical advantage for reliable close-off in demanding HVACR environments. It is specifically compatible with 1/2" to 2" VB-7xxx Series valve bodies and 1/2" to 1-1/4" VB-9xxx Series valves, ensuring a secure connection and precise stroke control. The kit features a die-cast aluminum mounting bracket and includes two cams, a plunger, and a stem extension to facilitate seamless actuator to valve assembly. Technicians rely on the AV-393 for its robust construction and standard valve position indication, which simplifies commissioning and troubleshooting. Whether you are replacing an obsolete Barber Colman linkage or performing a new HVAC valve linkage installation, this kit ensures the 300 lb close-off force required for leak-free operation in water and steam systems.

• Universal Compatibility: Fits the comprehensive VB-7xxx series (up to 2") and VB-9xxx series (up to 1-1/4") for maximum field flexibility.
• High Stem Force: Rated for 300 lb stem force to maintain tight shut-off against high differential pressures.
• Simplified Assembly: The complete linkage kit includes all necessary hardware—cams, plungers, and extensions—to reduce installation time.
• Durable Construction: Features a die-cast aluminum bracket designed to withstand the vibration and thermal stress of commercial mechanical rooms.
• Clear Feedback: Standard integrated position indication allows for quick visual verification of valve travel and seating.

Which actuators are compatible with the AV-393?
This linkage is purpose-built for gear train actuators, including the MA, MP, and certain Forta or DuraDrive series, provided they meet the minimum 70 in-lb torque requirements.

Does the AV-393 support steam applications?
Yes, it is suitable for steam media up to 35 psig. Ensure the actuator is mounted at a 45-degree angle from vertical if ambient temperatures approach the actuator's thermal limits.

Can I use this for 2-inch VB-9xxx series valves?
No, for 1-1/2" and 2" VB-9xxx series valve bodies, the AV-394 linkage is required. The AV-393 is limited to 1-1/4" on the VB-9xxx series but covers up to 2" on the VB-7xxx series.

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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.