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Johnson Controls Zone Valves
Johnson Controls VLC2200GC-C 2-Way Motorized Zone Valve
The Johnson Controls VLC2200GC-C is a motorized 2-way zone valve designed for on/off control of water flow in HVAC terminal units, such as fan coils.
This specific model is a DN20 (3/4") version that operates on a 220V power supply and features a spring-return safety mechanism.nitor temperatures and features a Single-Pole, Double-Throw (SPDT) switch.
Technical Specifications
- Valve Type: 2-Way, Normally Closed (NC).
- Pipe Size: DN20 (3/4 inch).
- Power Supply: 220V AC (±10%), 50/60Hz.
- Action: Spring return; opens in less than 18 seconds and closes in less than 8 seconds.
- Pressure Ratings: Rated pressure of PN20 (300 psi) with a close-off pressure of 0.35 MPa (50 psi).
- Operating Conditions: Suitable for fluid temperatures between 0°C and 94°C.
Construction and Features
- Materials: Forged brass valve body with EPDM seals for bubble-tight shutoff.
- System Suitability: Designed for closed-loop systems. Using this valve in open systems is discouraged due to potential erosion from oxygen and chlorine.
- Manual Control: Like other models in the VLC2000 series, it typically includes a manual lever on the actuator to manually open the valve during power failures or maintenance.
- Field Installation: The actuator is detachable and can be field-installed or replaced without disconnecting the valve body from the piping.
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.
Johnson Controls VLC2300GC-C 3-Way Motorized Zone Valve
The Johnson Controls VLC2300GC-C is a motorized 3-way zone valve designed for controlling the flow of hot or chilled water in closed-loop HVAC systems.
This DN20 (3/4") model operates on 220V power and features a spring-return mechanism to ensure the valve returns to a safe position during power loss.
Technical Specifications
- Valve Type: 3-Way mixing or diverting configuration.
- Size: DN20 (3/4 inch).
- Power Supply: 220V AC (±10%), 50/60Hz.
- Close-off Pressure: 0.35 MPa (50 PSI).
- Rated Pressure: PN20 (300 PSI / 2.0 MPa).
- Operating Times: Opens in less than 18 seconds; closes via spring return in less than 8 seconds.
- Fluid Temperature: Suitable for water between 0°C and 94°C.
- Materials: Forged brass valve body with EPDM rubber seals for bubble-tight shutoff.
Key Features
- Spring Return Action: The valve is "Normally Closed" (NC) to the B port; it can be used in a "Normally Open" (NO) configuration by simply turning the valve around during installation.
- Manual Override: Includes a manual lever on the actuator housing that allows for manual flow control during power outages or system filling. This lever automatically resets to "auto" once power is restored.
- Closed System Limitation: Johnson Controls explicitly recommends using these valves only in closed-loop systems to prevent premature failure from dissolved oxygen and chlorine.
- Field Assembly: The actuator and valve body are designed for easy field assembly and disassembly without the need for specialized tools or complex commissioning.