Schneider Electric VK-7223-202-4-8 Pneumatic Control Valve 1" NPT Normally Closed

The Schneider Electric (Barber Colman) VK-7223-202-4-8 is a two-way pneumatic control valve designed for HVAC and industrial process control applications. This normally closed valve features a 1-inch NPT threaded connection and operates on 5-10 PSI air pressure with spring return functionality.

Key Specifications:

• Valve series: VK-7223 two-way pneumatic control valve
• Connection size: 1-inch NPT female threads
• Valve action: Normally closed (N/C) - spring return to closed position on air failure
• Operating pressure: 5-10 PSI air pressure range
• Flow coefficient: 14 Cv for accurate flow capacity calculation
• Actuator configuration: 202 series pneumatic actuator
• Trim configuration: Code 4 materials for reliable seating
• Packing: Code 8 configuration for proper seal integrity

This pneumatic control valve is ideal for hot water, chilled water, and steam applications in commercial HVAC systems. The normally closed configuration provides fail-safe operation, automatically closing the valve when air pressure is lost. The 14 Cv rating makes it suitable for moderate flow applications requiring precise modulating control.