Description
The Schneider Electric (Barber Colman) M800A Forta Globe Valve Actuator is a high-performance, versatile actuator engineered for precise control of globe valves in commercial HVAC and building automation systems. Designed for demanding hydronic and steam applications, the M800A delivers reliable linear actuation with flexible control input options and robust force output.
Control Flexibility
The M800A supports both floating and proportional control modes, making it adaptable to a wide range of building automation and direct digital control (DDC) systems. Accepted control signals include:
- 0 to 10 Vdc proportional input
- 2 to 10 Vdc proportional input
- 4 to 20 mA (with included 500 Ohm resistor)
- Floating (tri-state) control
Feedback & Position Monitoring
- 2 to 10 Vdc feedback signal for accurate valve position monitoring and integration with BAS/DDC systems
Electrical Specifications
- Supply voltage: 24V AC/DC
- Control input: 0–10 Vdc, 2–10 Vdc, or 4–20 mA (with 500 Ohm resistor)
- Position feedback: 2–10 Vdc
Mechanical Specifications
- Actuator force: 180 Lbf (pounds-force) for dependable valve authority
- Mounting: U-bolt mounting for secure, vibration-resistant installation
- Compatible with Forta series globe valve bodies
Key Benefits
- Dual control mode (floating and proportional) in a single actuator reduces inventory requirements
- High 180 Lbf force output ensures positive valve shutoff and reliable modulation
- Integrated feedback signal simplifies commissioning and BAS integration
- U-bolt mounting provides a stable, field-adjustable connection to valve stems
- 24V operation compatible with standard HVAC control transformers
- Trusted Schneider Electric (Barber Colman) quality for long-term reliability in commercial applications
The M800A is an ideal choice for engineers and contractors specifying actuators for hydronic heating and cooling coil control, chilled water systems, hot water systems, and steam applications where precise, reliable valve modulation is required.







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