Schneider Electric VK-7223-203-4-3 Pneumatic HVAC Control Valve 1/2" NPT Normally Closed

The Schneider Electric (Barber Colman) VK-7223-203-4-3 is a pneumatic HVAC control valve designed for precise fluid control in commercial heating, ventilation, and air conditioning systems. This 2-way normally closed valve features a durable bronze body construction and 1/2" NPT threaded connections for reliable installation in hot water, chilled water, or glycol applications.

Key Specifications:

• Valve Configuration: 2-way, normally closed (N/C)
• Connection Size: 1/2" NPT female threads
• Operating Pressure Range: 8-13 PSI pneumatic control signal
• Flow Coefficient (Cv): 2.2
• Body Material: Bronze construction for corrosion resistance
• Application: Hot water, chilled water, and glycol service

The VK-7223 series valves provide proportional control when connected to compatible pneumatic actuators and HVAC control systems. The normally closed design ensures the valve closes upon loss of air pressure, providing fail-safe operation. The 2.2 Cv rating makes this valve suitable for smaller zone control applications requiring precise flow modulation.