Schneider Electric VK-7223-203-4-4 1/2" NPT Normally Closed Steam Valve 8-13 PSI

The Schneider Electric (Barber Colman) VK-7223-203-4-4 is a pneumatically actuated steam control valve designed for commercial and industrial HVAC applications. This normally closed (N/C) valve features a 1/2" NPT threaded connection and operates within a pressure range of 8-13 PSI, making it ideal for precise steam flow control in heating systems.

Key Specifications:

• Flow coefficient (Cv): 4.4 for accurate flow capacity calculation
• Normally closed configuration - valve closes when air pressure is removed
• Operating pressure range: 8-13 PSI
• 1/2" NPT female threaded connections
• Bronze or brass body construction for durability and corrosion resistance
• Two-way valve design for on/off or modulating control

This valve is commonly used in steam heating applications including unit heaters, radiators, convectors, and other terminal heating equipment. The pneumatic actuator provides reliable, proportional control when paired with compatible temperature controllers and air compressors. The Barber Colman VK series has been a trusted standard in commercial HVAC control for decades.