Description
The Schneider Electric (Barber Colman) VK-7211-201-4-6 is a complete valve assembly engineered for precise flow control in commercial HVAC hydronic and pneumatic control systems. This factory-matched assembly pairs a high-quality bronze body globe valve with a spring return pneumatic actuator, delivering reliable, repeatable performance in demanding building automation applications.
Valve Overview
The globe valve features a durable bronze body with brass trim, providing excellent corrosion resistance for use with hot water, chilled water, and other hydronic media. The 2-way, normally open (NO) configuration ensures the valve defaults to the open position upon loss of control signal or air pressure, making it well-suited for fail-safe heating and cooling applications. The equal percentage flow characteristic provides precise, stable control across the full range of valve travel, ideal for modulating service.
Key Valve Specifications
- Configuration: 2-Way, Normally Open (NO)
- Pipe Size: 3/4 inch
- End Connections: NPT x Union
- Flow Coefficient (Cv): 7.5
- Flow Characteristic: Equal Percentage
- Body Material: Bronze
- Trim Material: Brass
- Valve Type: Globe
Pneumatic Actuator
The integrated spring return pneumatic actuator is designed for dependable modulating or two-position control using a standard pneumatic control signal. The 3–7 PSI spring range provides a defined stroke range and ensures the valve returns to its normally open position upon loss of air pressure, supporting fail-safe system design.
Key Actuator Specifications
- Actuator Type: Spring Return Pneumatic
- Spring Range: 3–7 PSI
- Fail-Safe Action: Normally Open (valve opens on loss of signal)
Applications
- Commercial HVAC hydronic heating and cooling coil control
- Fan coil units and air handling units (AHUs)
- Pneumatic building automation and DDC control systems
- Hot water and chilled water distribution systems
- Modulating flow control in 2-pipe and 4-pipe systems
Why Choose the VK-7211-201-4-6
As a factory-assembled and matched valve-actuator package, the VK-7211-201-4-6 eliminates the guesswork of field assembly and ensures optimal performance from day one. The Schneider Electric (Barber Colman) heritage brings decades of proven reliability in commercial controls, making this assembly a trusted choice for mechanical contractors, building engineers, and HVAC service professionals.
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