Description
The Honeywell MVN643L0000 is a low-profile ball valve actuator engineered for precise, reliable flow control in commercial and light industrial HVAC hydronic systems. Designed to pair with compatible Honeywell ball valve bodies, this actuator delivers fast, responsive operation with a 30-second timing cycle and a fail-in-place (non-spring-return) design that holds the valve position during a power loss — ideal for applications where maintaining last-known flow state is critical.
Key Features
- 24 VAC/VDC operating voltage for compatibility with standard HVAC control systems
- Fast SPDT (Single-Pole, Double-Throw) control signal for flexible integration with building automation and zone control systems
- Fail-in-place (non-spring-return) operation — valve holds last position on power loss
- 30-second drive timing for quick, responsive actuation
- NEMA 2 enclosure rating for protection against dripping water and light moisture
- Low-profile housing for installations with limited clearance
Specifications
- SKU: MVN643L0000
- Brand: Honeywell
- Supply Voltage: 24 VAC/VDC
- Control Signal: Fast SPDT
- Fail Mode: Fail in Place (Non-Spring Return)
- Drive Time: 30 Seconds
- Enclosure Rating: NEMA 2
- Profile: Low Profile
Application
The MVN643L0000 is well-suited for hydronic heating and cooling systems, fan coil units, air handling units, and zone control applications where dependable valve actuation and compact form factor are required. Its SPDT signal compatibility makes it easy to wire into a wide range of controllers and thermostats.
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