Schneider Electric (Barber Colman) AV-91 Cam & Plunger

The Schneider Electric (Barber Colman) AV-91 Cam and Plunger is a precision-engineered linkage kit critical for maintaining the operational integrity of spring return actuators in complex HVACR systems. Designed specifically for S/R Check Series applications, this assembly facilitates the efficient conversion of rotary force into linear motion, ensuring accurate valve positioning. This kit typically includes two cams, a plunger, and a stem extension, capable of handling 150 lb stem force with a minimum required torque of 40 in-lb. For veteran contractors, the AV-91 is a standard-issue component for refurbishing or maintaining Barber Colman actuators across 1/2" to 2" valve bodies. Its UL-listed construction and finger-safe terminals provide the mechanical reliability needed for demanding industrial environments. Proper installation of this cam and plunger assembly is essential for fail-safe performance during power loss, leveraging the spring return function to protect downstream equipment and maintain system balance.

• High Mechanical Advantage: Engineered to provide a robust 150 lb stem force for reliable valve actuation.
• Precision Tolerance: High-tolerance cam profiles ensure consistent linear travel and minimize hunting in control loops.
• Rugged Construction: Built to withstand the thermal and vibrational stresses of commercial boiler and chiller rooms.
• OEM Compatibility: Exact drop-in replacement for Barber Colman S/R Check Series, eliminating the need for field modifications.
• Safety Integration: Features a spring return check function to ensure a known fail-safe position during power interruptions.

• What actuators are compatible with the AV-91? It is primarily used with the Schneider Electric (formerly Barber Colman) spring return actuator series requiring a cam/plunger linkage.
• Does this kit include the stem extension? Yes, the standard AV-91 kit includes the cams, plunger, and necessary stem extension components for a full linkage rebuild.
• How do I ensure correct cam alignment during installation? Proper indexing of the cams is critical; always refer to the specific actuator’s stroke requirements and the index marks on the cam body to ensure linear accuracy.

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.