Description
The Schneider Electric (Barber Colman) VK-7211-201-4-5 is a complete valve and actuator assembly engineered for precise flow control in commercial HVAC hydronic and pneumatic systems. Combining a durable bronze body globe valve with a reliable spring return pneumatic actuator, this assembly delivers consistent, accurate modulation in heating and cooling applications.
Valve Overview
The globe valve features a 2-way, normally open configuration, meaning the valve is open in its de-energized or unpressurized state — ideal for fail-safe heating applications. The equal percentage flow characteristic provides fine-tuned control across a wide range of flow rates, making it well-suited for variable flow hydronic systems where precise temperature regulation is critical.
Key Specifications
- SKU: VK-7211-201-4-5
- Configuration: 2-Way, Normally Open (NO)
- Pipe Size: 3/4 inch
- End Connections: NPT x Union
- Flow Coefficient (Cv): 5.5
- Flow Characteristic: Equal Percentage
- Valve Body Material: Bronze
- Trim Material: Brass
- Valve Type: Globe Valve
- Actuator Type: Spring Return Pneumatic
- Actuator Spring Range: 3–7 PSI
Actuator Details
The integrated 3–7 PSI spring return pneumatic actuator provides reliable, proportional control using compressed air signals. The spring return function ensures the valve returns to its normally open (fail-safe) position upon loss of air pressure, protecting the system during power or air supply failures. This actuator is compatible with standard pneumatic control systems commonly found in commercial building automation environments.
Construction & Design
- Bronze valve body offers excellent corrosion resistance and long service life in hydronic systems
- Brass trim components provide durability and reliable sealing performance
- NPT x Union end connections allow for straightforward installation and easy in-line serviceability
- Globe valve design ensures tight shutoff and accurate flow modulation
- Equal percentage characteristic delivers stable control across varying load conditions
Typical Applications
- Commercial HVAC hydronic heating and cooling coil control
- Fan coil unit (FCU) and air handling unit (AHU) water flow regulation
- Pneumatic building automation and control systems
- Variable flow hydronic distribution systems
- Industrial process fluid control requiring fail-open operation
Why Choose the VK-7211-201-4-5
As part of the trusted Schneider Electric (Barber Colman) valve product line, the VK-7211-201-4-5 combines proven globe valve technology with a factory-matched pneumatic actuator for a ready-to-install solution. The equal percentage flow characteristic ensures smooth, stable control response, while the bronze and brass construction guarantees long-term reliability in demanding commercial HVAC environments.
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