Description
The Belimo NRB24-SR is a high-performance, non-spring return rotary valve actuator engineered for precise and reliable control of ball valves in commercial and industrial HVAC hydronic systems. Powered by AC/DC 24V, this actuator delivers smooth proportional modulation, making it an ideal choice for demanding building automation and energy management applications.
Key Features
- Non-spring return design retains last position on power loss
- AC/DC 24V power supply for flexible installation compatibility
- Proportional (0–10 VDC) control signal for precise valve modulation
- Compact, robust housing suitable for commercial HVAC environments
- Manual override function for easy commissioning and maintenance
- Gear train protection against overload and stall conditions
- Visual position indicator for quick field verification
- Meets UL, CE, and cULus certification requirements
Typical Applications
- Hydronic heating and cooling coil control
- Chilled and hot water systems
- Building automation and energy management systems
- Fan coil units and air handling units
- Variable flow hydronic systems
Why Choose Belimo?
Belimo is a globally recognized leader in actuator and valve technology, trusted by HVAC professionals for decades. The NRB24-SR reflects Belimo’s commitment to precision engineering, long service life, and ease of installation — reducing commissioning time and total cost of ownership in commercial HVAC projects.
Product Specifications
- SKU: NRB24-SR
- Brand: Belimo
- Power Supply: AC/DC 24V
- Actuator Type: Non-Spring Return, Rotary
- Control Signal: Proportional (0–10 VDC)
- Fail-Safe: Non-Spring Return (holds last position)
- Certifications: UL, cULus, CE
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