Description
The Honeywell MVN643A0000 is a professional-grade ball valve actuator engineered for precise, reliable control in commercial and residential HVAC hydronic systems. Designed with a standard profile and a robust NEMA 2 enclosure, this actuator delivers dependable performance in a wide range of building automation and zone control applications.
Key Features
- 24 Vac/Vdc operating voltage for broad compatibility with low-voltage HVAC control systems
- Fast SPDT (Single-Pole Double-Throw) control signal for responsive, accurate valve positioning
- Fail-in-Place (Non-Spring Return) design — actuator holds its last position upon power loss, preventing unintended system changes
- 30-second timing for smooth, consistent valve actuation cycles
- NEMA 2 enclosure rating provides protection against dripping water and light moisture exposure
- Standard profile design for straightforward installation and compatibility with common ball valve configurations
Application
The MVN643A0000 is ideal for use in hydronic heating and cooling systems, zone control panels, and building automation setups where dependable valve actuation and position retention are critical. The fail-in-place functionality makes it especially well-suited for applications where maintaining the last valve position during a power interruption is preferred over a default open or closed state.
Specifications
- SKU / Part Number: MVN643A0000
- Brand: Honeywell
- Voltage: 24 Vac/Vdc
- Control Signal: Fast SPDT
- Fail Mode: Fail-in-Place (Non-Spring Return)
- Actuator Timing: 30 Seconds
- Enclosure Rating: NEMA 2
- Profile: Standard
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