Johnson Controls VLC2300FC-C 3-Way Motorized Zone Valve

The Johnson Controls VLC2300FC-C is a motorized 3-way zone valve designed primarily for controlling the flow of hot or chilled water in closed-loop HVAC systems, such as fan coil units (FCU).

This DN15 (1/2″) model operates on 220V power and features a spring-return mechanism for safety.

Technical Specifications

• Valve Type: 3-Way mixing or diverting.
• Size: DN15 (1/2 inch)
• Power Supply: 220V AC (±10%), 50/60Hz.
• Flow Coefficient (Kv/Cv): 1.7 Kv (2.0 Cv).
• Close-off Pressure: 0.45 MPa (65 PSI).
• Operating Conditions: Opens in less than 18 seconds; closes via spring return in less than 8 seconds.
• Fluid Temperature: 0°C to 94°C.
• Materials: Brass valve body with EPDM rubber seals for bubble-tight shutoff.

Key Features

• Spring Return Action: The valve is “Normally Closed” to the coil, meaning it automatically returns to its default position upon power loss to prevent overheating or freezing.
• Field Versatility: The actuator can be easily field-installed or replaced after the piping is complete, simplifying maintenance.
• Manual Override: Many VLC2000 series actuators include a manual lever to allow manual flow control during power outages or system commissioning.
• Closed System Limitation: Johnson Controls recommends using these valves only in closed-loop systems to prevent erosion from dissolved oxygen and chlorine found in open systems.