Description
Belimo CQKB24-SR-RR Overview
The Belimo CQKB24-SR-RR is a compact, high-performance quarter-turn actuator engineered for precise modulating control of ball valves in commercial and industrial HVAC applications. Powered by 24 VAC/DC and featuring a proportional (SR) control signal input, this actuator delivers accurate, responsive positioning to meet demanding building automation and hydronic system requirements. The normally closed (N/C) fail-safe design ensures the valve returns to the closed position upon loss of power or control signal, protecting your system from unintended flow. The NEMA 2 drip-proof enclosure provides added protection in mechanical rooms and other environments where moisture exposure is a concern.
Key Features
- 24 VAC/DC operating voltage for broad compatibility with building automation systems
- Proportional (SR) control — accepts 0–10V or 2–10V DC modulating signal for precise valve positioning
- Normally Closed (N/C) fail-safe operation — valve closes automatically on power or signal loss
- NEMA 2 drip-proof enclosure rating for use in damp or moisture-prone mechanical spaces
- Quarter-turn design for direct mounting to compatible Belimo ball valves
- Compact, lightweight form factor for easy installation in tight spaces
- Manual override for commissioning and maintenance convenience
- Belimo’s proven reliability and long service life
Typical Applications
- Hydronic heating and cooling systems
- Fan coil unit (FCU) and air handling unit (AHU) valve control
- Variable air volume (VAV) and building automation system (BAS) integration
- Commercial HVAC water distribution and zone control
Why Choose Belimo?
Belimo is a globally recognized leader in actuator and valve technology for HVAC systems. The CQKB24-SR-RR reflects Belimo’s commitment to energy efficiency, installation simplicity, and long-term reliability. Whether you’re upgrading an existing system or specifying new construction, this actuator delivers the modulating precision and fail-safe dependability that engineers and contractors trust.
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