Barber Colman (Schneider Electric) MK-6801 Damper Actuator
The Barber Colman MK-6801, now part of Schneider Electric’s product line, is a pneumatic valve actuator designed for proportional control of larger valves in HVAC systems. With a 50 square inch effective diaphragm area, it provides precise modulation of valve positions, ensuring optimal control of hot or chilled water flow in heating and cooling applications.
Technical Specifications
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Model: MK-6801
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Type: Pneumatic Valve Actuator
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Control Signal: Proportional pneumatic control
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Nominal Spring Range: 3 to 8 psi (21 to 55 kPa)
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Stroke Length: 1 inch (25 mm)
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Effective Diaphragm Area: 50 square inches (323 cm²)
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Compatible Valve Sizes: 2-1/2 to 4 inches (65 to 100 mm) VB-9xxx series valves
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Start Point Adjustment: Adjustable ±2 psi (14 kPa)
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Maximum Air Pressure: 30 psig (207 kPa)
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Ambient Temperature Limits: Operating range from -20°F to 220°F (-29°C to 104°C)
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Air Connections: 1/8 inch FNPT
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Housing: Rugged die-cast aluminum
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Mounting Orientation: Any upright position with actuator head above the centerline of the valve body
Key Features
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Proportional Control: Enables accurate modulation of valve positions based on pneumatic input signals
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Large Diaphragm Area: Provides substantial force output suitable for controlling larger valves
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Adjustable Start Point: Allows customization of the actuator’s response range to meet specific application requirements
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Spring Return Mechanism: Ensures the valve returns to its default position upon loss of air pressure, enhancing system safety
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Durable Construction: Die-cast aluminum housing and replaceable beaded molded neoprene diaphragm ensure longevity and reliability
Compatible Components & Accessories
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Valve Linkage Kits: AV-495 for VB-9xxx series valves
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Positive Positioner: AK-42309-500 for enhanced control precision
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Spring Compression Tool: TOOL-75 to assist with installation and maintenance
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Pneumatic Calibration Tool Kit: TOOL-95 for accurate calibration of the actuator
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Replacement Springs: PNV-245-103 (3 to 8 psi green spring), PNV-245-105 (5 to 10 psi black spring), PNV-245-108 (8 to 13 psi blue spring)
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Replacement Diaphragm: PNV-202 for maintenance purposes
Industry Applications
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HVAC Systems: Ideal for controlling the flow of hot or chilled water in heating, ventilation, and air conditioning systems
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Building Automation: Integrates seamlessly into automated control systems for efficient building management
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Energy Management: Enhances energy efficiency by providing precise control over heating and cooling processes
Installation & Maintenance Notes
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Mounting: Ensure the actuator is mounted in an upright position with the actuator head above the centerline of the valve body. Allow sufficient space for accessories and maintenance access
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Wiring: Follow all applicable national and local electrical codes when making connections
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Adjustment: Utilize the start point adjuster to set the desired response range; refer to the installation manual for detailed instructions
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Inspection: Regularly inspect the actuator and linkage for signs of wear or damage; ensure proper operation through periodic testing
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Safety Precautions: Disconnect power before installation or maintenance; avoid locations with excessive moisture, dust, or corrosive fumes
The Barber Colman (Schneider Electric) MK-6801 pneumatic valve actuator offers precise and reliable control for larger valves in HVAC applications, contributing to enhanced system performance and energy efficiency.
We ship this product worldwide! Delivery is normally stock.
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