Schneider Electric VK-7211-201-4-7 1" Union Control Valve 10CV N/O 3-7 PSI

The Schneider Electric (Barber Colman) VK-7211-201-4-7 is a 1-inch union connection pneumatic control valve designed for HVAC and building automation systems. This normally open (N/O) valve features a 10 CV flow coefficient and operates with 3-7 PSI spring range actuation, making it ideal for modulating control applications in heating, cooling, and process control systems.

Key Specifications:

• Connection Size: 1 inch union connections for easy installation and maintenance
• Flow Coefficient (CV): 10 for precise flow control
• Valve Action: Normally Open (N/O) - valve is open when de-energized
• Spring Range: 3-7 PSI pneumatic actuation
• Union end connections provide tool-free removal without cutting pipe
• Bronze or brass body construction for durability and corrosion resistance
• Two-way valve design for on/off or modulating control

This control valve is commonly used in chilled water, hot water, and steam applications where reliable, proportional flow control is required. The normally open configuration ensures flow continues in the event of control signal loss, providing fail-safe operation for critical heating applications. The union connections allow for quick valve replacement and system maintenance without disturbing piping.