Schneider Electric (Barber Colman) AV-400 Linkage Link

The Schneider Electric AV-400 is an essential pneumatic actuator valve linkage kit designed for the field assembly of MK-2690 series actuators onto various globe valves. Engineered for HVAC control systems, this kit provides a robust mechanical interface for 1/2 inch to 2 inch valves, ensuring precise actuator-to-valve coupling. A critical technical feature of the AV-400 linkage is the inclusion of three interchangeable compression springs calibrated for 3 to 7 psi, 5 to 10 psi, and 8 to 13 psi ranges. This versatility allows technicians to calibrate the pneumatic spring return force to match specific valve close-off pressure requirements. The hardware facilitates a secure stem connection, minimizing hysteresis and ensuring reliable proportional control in steam or water applications. Whether performing an actuator retrofit or new installation, this Barber Colman legacy-compatible kit is the standard for maintaining pneumatic valve assembly integrity.

• Broad Compatibility: Supports field mounting on a wide range of Schneider Electric and legacy Barber Colman globe valves sized up to 2 inches.
• Adjustable Pressure Ranges: Includes multi-psi spring sets to accommodate different pneumatic control signals and system demands.
• Heavy-Duty Construction: Built to withstand high-ambient temperatures and vibration common in mechanical rooms.
• Simplified Field Assembly: Streamlines the actuator installation process, reducing labor time during HVAC maintenance.

Common Questions

Which actuators are compatible with the AV-400?
The AV-400 is specifically engineered for use with the MK-2690 pneumatic actuator series.

Does this kit include the springs for different sequencing?
Yes, the kit includes three separate pneumatic springs (3-7, 5-10, and 8-13 psi) to allow for proper valve sequencing and shut-off force adjustment.

Can I use the AV-400 on larger 3-inch valves?
No, this specific valve linkage kit is rated for 1/2” to 2” valve bodies. Larger valves require different linkage hardware to handle increased stem travel and force.

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.