Description
The Schneider Electric (Barber Colman) MK-6601 is a proportional control, spring return pneumatic valve actuator engineered for reliable linear valve positioning in commercial HVAC and building automation systems. Housed in a rugged NEMA 1 enclosure, this actuator delivers precise, repeatable performance in demanding pneumatic control applications.
Key Features
- Proportional control action for accurate, modulating valve positioning
- Spring return operation ensures fail-safe valve positioning on loss of air pressure
- Linear movement design for direct-coupled valve stem actuation
- NEMA 1 enclosure provides protection in standard indoor environments
- 3–8 PSI pneumatic operating range for compatibility with standard pneumatic control systems
- 50 square inch diaphragm area delivers robust actuating force
- 1/8″ NPT air connection for easy integration with pneumatic tubing and fittings
- 1/2″ nominal stroke for precise valve travel control
Specifications
- Model: MK-6601
- Brand: Schneider Electric (Barber Colman)
- Control Type: Proportional
- Action: Spring Return
- Movement: Linear
- Enclosure: NEMA 1
- Pneumatic Operating Range: 3–8 PSI
- Diaphragm Area: 50 square inches
- Air Connection: 1/8″ NPT
- Nominal Stroke: 1/2″
Applications
The MK-6601 is ideal for use in commercial building HVAC systems where pneumatic control of two-way or three-way valves is required. Its proportional spring return design makes it well-suited for air handling units, fan coil units, chilled water and hot water valve control, and other hydronic system applications where modulating control and fail-safe operation are critical.
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