Schneider Electric (Barber Colman) AV-496 Linkage Kit

The Schneider Electric (Barber Colman) AV-496 Linkage Kit is a critical hardware interface designed for the field assembly of MK-88xx and MK-89xx series actuators to large-bore globe valves. This heavy-duty kit provides the necessary mechanical coupling to adapt 100 sq. in. pneumatic actuators to 2-1/2" to 6" VB-9XXX series valve bodies. Engineered for precision in commercial HVAC and industrial process control, the AV-496 ensures high-force linear transmission required for accurate valve stem positioning and tight close-off. It is compatible with a wide range of flanged Schneider flanged globe valves, though it is specifically not for use with the VB-9323 model. For technicians performing field retrofits or replacing legacy Barber Colman valve linkages, this kit simplifies the mounting process, maintaining alignment across the full 1" to 2" stroke range of the MK-8000 series. Its robust die-cast construction handles the high ambient temperatures often found in mechanical rooms and steam applications.

Key Benefits

• Broad Compatibility: Seamlessly bridges MK-8801, MK-8811, MK-8821, MK-8901, and related pneumatic actuators to 2-1/2" through 6" VB-9213, VB-9223, and VB-9313 valves.
• Optimized Close-Off: Provides the structural integrity needed to achieve rated close-off pressure on large-diameter 5" and 6" valves.
• Simplified Field Mounting: Includes the essential piston-to-stem connectors and brackets required for an upright actuator mounting configuration.
• Extreme Durability: Built to endure the demanding environment of HVAC pneumatic control systems without mechanical fatigue.

Common Questions

Is the AV-496 compatible with the VB-9323 valve body?
No, the AV-496 is compatible with most 2-1/2" to 6" VB-9000 series valves, but the VB-9323 is specifically excluded from this linkage kit's compatibility list.

Which actuators can I mount using this kit?
This kit is designed specifically for the MK-88xx and MK-89xx series pneumatic actuators, which are the large 100 sq. in. head models used for high-capacity valve bodies.

Can this linkage be used for steam applications?
Yes, but ensure the actuator is mounted in an upright position. For high-temperature steam, the actuator head should be swiveled or positioned to minimize heat transfer from the valve stem to the diaphragm.

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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.