Resideo VU53N1033 Two-Way Fan Coil Valve 3/4" NPT 3.5 Cv Normally Closed

The Resideo VU53N1033 is a high-pressure two-way fan coil valve body designed for controlling the flow of hot or chilled water in commercial HVAC applications. This normally closed valve features 3/4-inch NPT threaded connections and delivers a flow coefficient (Cv) of 3.5 (Kvs 3.0), making it ideal for medium-capacity hydronic systems.

Key Features:

• 3/4-inch NPT threaded connections for standard pipe installations
• Flow coefficient of 3.5 Cv (3.0 Kvs) for optimal water flow control
• Normally closed (NC) configuration for fail-safe operation
• High-pressure rated valve body construction for commercial applications
• Compatible with VU843A and VU844A series electric actuators (sold separately)
• Brass construction for durability and corrosion resistance

This valve body is commonly used in fan coil units, terminal reheat coils, convectors, and other commercial HVAC equipment. The normally closed design ensures the valve remains shut when the actuator is de-energized, providing energy-efficient operation and safety. Requires a separate electric actuator for automated control, typically controlled by a room thermostat or building automation system.