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Johnson Controls VA-7482-8201 Valve Actuator for Proportional Control
The Johnson Controls VA-7482-8201 is a compact linear electric valve actuator designed for proportional (modulating) control in HVAC applications like fan coil units and chilled ceilings.
It features a "Reverse Acting" (RA) configuration and uses an innovative auto-stroke detection system to calibrate itself to various valve types automatically.
Technical Specifications
- Control Type: Proportional with a 0–10 VDC signal and position feedback.
- Actuator Force: Provides a linear force of 160 N.
- Power Supply: Operates on 24 VAC/VDC.
- Speed/Timing: Features an 8-second full-stroke operating time.
- Protection: Rated IP54 for high resistance to dust and splashing water.
- Connection: Uses a standard M30 x 1.5 threaded coupling for field mounting.
- Cable: Typically includes a 2-meter, halogen-free pre-installed cable.
Key Features
- Auto Stroke Detection: This feature allows the actuator to adjust automatically to the variable strokes of terminal unit valves and pressure-independent control valves (PICV).
- Reverse Acting (RA): Specifically configured to act in reverse of the standard control signal (typically extending the stem as the signal decreases).
- Status Indicators: Proportional models like this one are equipped with a bi-color green/red LED to provide real-time operating status and diagnostic information.
- DIP Switches: Includes six internal DIP switches that allow users to configure specific operating parameters in the field.
Johnson Controls 1″ VLC2200HC-C 2-Way Zone Valve
- DN250 (1")
- 220V
The VLC2000 Series is designed to control water flow according to signals received from the controller. This maintains the room temperature by adjusting water flow through the fan coil unit.
The VLC2000 Series features a spring return function, and are available in DN15/20/25 valve sizes. The valve and actuator can be easily assembled on the field without accessories and commissioning.
Johnson Controls 3/4″ VLC2200GC-C 2-Way Motorized Zone
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.
Sopormetal 45% Silver Blue Flux Brazing Rods
Made In Portugal
Precision Brazing for Peak HVAC Performance.
The Sopormetal 45% Silver Blue Flux Brazing Rod is a premium, cadmium-free 45% silver brazing rod featuring a distinctive blue flux coating. This integrated coating completely eliminates the need to manually apply separate paste flux, making it a highly efficient, time-saving solution for field service technicians. Sopormetal brazing rods are made in Portugal.
Johnson Controls 1/2″ 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 3/4″ 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.
