Description
The Schneider Electric (Barber Colman) VK-7211-201-4-3 is a factory-assembled, two-way normally open globe valve and pneumatic actuator combination engineered for precise flow control in commercial HVAC hydronic and steam systems. The pre-matched valve and actuator assembly simplifies installation and ensures optimal performance right out of the box.
Valve Specifications
- Configuration: 2-Way, Normally Open
- Pipe Size: 1/2″ NPT x Union end connections
- Flow Coefficient: Cv 2.2
- Flow Characteristic: Equal Percentage
- Body Material: Bronze body with brass trim
- Valve Type: Globe valve
Actuator Specifications
- Actuator Type: Spring Return Pneumatic
- Control Signal: 3–7 PSI pneumatic input signal
- Action: Spring return for fail-safe positioning
Key Features & Benefits
- Factory-assembled valve and actuator for quick, reliable installation
- Equal percentage flow characteristic delivers precise modulating control across a wide load range
- Normally open design ensures flow is maintained on loss of pneumatic signal — ideal for heating applications
- NPT x Union end connections allow easy in-line installation and removal without disturbing piping
- Durable bronze body with brass trim provides excellent corrosion resistance for water and steam service
- Spring return actuator provides dependable fail-safe operation
- Compatible with standard pneumatic control systems operating in the 3–7 PSI range
Typical Applications
- Commercial HVAC hydronic heating and cooling coil control
- Fan coil unit and air handling unit water valves
- Building automation systems with pneumatic controls
- Steam and hot water distribution systems
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