Description
The Schneider Electric (Barber Colman) MK-3111 is a reliable pneumatic damper actuator engineered for precise damper control in commercial HVAC and building automation systems. Designed with a fail-safe spring-return mechanism, the actuator shaft automatically retracts upon loss of air pressure, ensuring safe and predictable damper positioning during power or air supply failures.
Key Features
- Spring range: 5 to 10 PSI for accurate modulating control
- Adjustable stroke: 2″ to 4″ to accommodate a variety of damper linkage configurations
- Fail-safe spring return: actuator shaft retracts automatically on loss of air pressure
- Maximum air pressure: 30 PSIG for safe, reliable operation
- Air connections: 1/8″ FNPT for easy integration with standard pneumatic tubing and fittings
Application
The MK-3111 is ideal for use in pneumatic HVAC control systems where dependable damper actuation is required. Its adjustable stroke and standard PSI spring range make it well-suited for VAV systems, economizer dampers, outside air dampers, and other commercial building automation applications.
Specifications
- Model: MK-3111
- Brand: Schneider Electric (Barber Colman)
- Actuator Type: Pneumatic, Spring Return
- Spring Range: 5–10 PSI
- Adjustable Stroke: 2″ to 4″
- Maximum Air Pressure: 30 PSIG
- Air Connection: 1/8″ FNPT
- Fail-Safe Action: Spring retracts actuator shaft on loss of air pressure
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