Schneider Electric VK-7221-203-4-4 Pneumatic Valve Actuator 1/2" Normally Closed 8-13 PSI

The Schneider Electric (Barber Colman) VK-7221-203-4-4 is a pneumatic valve actuator designed for HVAC control applications. This normally closed (N/C) actuator operates on 8-13 PSI air pressure and features a 1/2-inch union connection for easy installation and servicing.

Key Features:

• Normally closed configuration - valve closes when air pressure is removed
• Operating pressure range of 8-13 PSI for reliable control
• 1/2-inch union connection for straightforward pipe fitting
• Durable construction suitable for commercial HVAC systems
• Direct-acting pneumatic operation for dependable performance

This actuator is commonly used with hot water or steam valves in heating systems, providing proportional control based on pneumatic controller output. The union connection allows for valve removal without breaking pipe joints, simplifying maintenance procedures.