Description
Honeywell VN3ZZA00TFL 24V Modulating Electronic Fail-Safe Open Actuator
The Honeywell VN3ZZA00TFL is a 24-volt modulating electronic actuator engineered for precise, reliable control in commercial and industrial HVAC hydronic systems. Featuring a fail-safe open design, this actuator automatically returns the valve to the open position upon loss of power or control signal — a critical safety feature for heating and process applications where flow must be maintained during power interruptions.
Key Features
- 24V AC/DC operating voltage for broad system compatibility
- Modulating control for accurate, proportional valve positioning
- Fail-safe open operation — valve returns to open position on power loss
- Electronic actuator design for smooth, quiet, and responsive performance
- Compact, durable construction suited for demanding HVAC environments
- Compatible with Honeywell VN-series valve bodies
- Designed for hydronic heating, cooling, and process control applications
Application
The VN3ZZA00TFL is ideal for use in commercial HVAC systems requiring modulating control of hot water, chilled water, or steam valves. The fail-safe open function ensures continued flow in the event of a power failure, making it well-suited for critical heating and process systems where uninterrupted fluid flow is essential to system safety and performance.
Product Specifications
- SKU: VN3ZZA00TFL
- Brand: Honeywell
- Supply Voltage: 24V
- Control Type: Modulating (Electronic)
- Fail-Safe Mode: Open
- Actuator Type: Electronic









