Belimo CQKB24-S-LL Actuator
The Belimo CQKB24-S-LL is a specialized zone valve actuator designed for 2-way and 3-way ZoneTight valves. Operating on a 24VAC/DC power supply, this Electronic Fail-Safe (EFS) unit provides reliable Normally Open (NO) or Fail-Open (FO) functionality via a supercapacitor power bank. This technical design ensures the valve returns to its emergency position during power loss, providing critical protection in hydronic systems. The unit delivers 22 in-lb (2.5 Nm) of torque with a 75-second motor run time, optimized for precise flow control. This model features an integrated SPDT auxiliary switch for position feedback or controlling secondary equipment like pumps and fans. Engineered for high-efficiency HVAC zone control, the CQKB24-S-LL utilizes brushless DC motor technology to minimize power consumption and eliminate the risk of motor burnout, ensuring consistent performance in commercial and residential heating and cooling applications.
Key Benefits for Contractors
- Integrated Supercapacitor: Provides a mechanical-spring-equivalent fail-safe without the bulk or wear, ensuring the Normally Open position during power failure.
- Auxiliary Feedback: Features a factory-set SPDT auxiliary switch for seamless integration into building automation systems (BAS).
- Simplified Installation: The press-fit connection allows for tool-free mounting to the valve body, reducing labor time on-site.
- Low Power Consumption: Consumes only 2.5W during motor operation and 0.5W in hold mode, improving overall system energy ratings.
- NEMA 2 (IP40) Housing: Durable construction suitable for plenum-rated installations in indoor HVAC environments.
Common Installation Questions
How do I verify the fail-safe direction on the CQKB24-S-LL?
This specific model is factory-configured for Fail-Open (FO) operation using stored energy. Upon loss of the 24V signal, the actuator drives the valve to the open position using the internal capacitor.
Can the auxiliary switch be adjusted in the field?
The CQKB24-S-LL auxiliary switch is set at a fixed point to indicate position status. For applications requiring custom switching points, confirm the sequence of operation matches the factory default of this LL-series model.
What is the maximum fluid temperature rating for the valve body used with this actuator?
While the actuator is rated for ambient temperatures up to 122°F, it is typically paired with Belimo CCV or zone valves rated for media temperatures between 36°F and 212°F.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $143.85
-65%$143.85
$50.35Belimo CQKB24-S-LL Actuator
The Belimo CQKB24-S-LL is a specialized zone valve actuator designed for 2-way and 3-way ZoneTight valves. Operating on a 24VAC/DC power supply, this Electronic Fail-Safe (EFS) unit provides reliable Normally Open (NO) or Fail-Open (FO) functionality via a supercapacitor power bank. This technical design ensures the valve returns to its emergency position during power loss, providing critical protection in hydronic systems. The unit delivers 22 in-lb (2.5 Nm) of torque with a 75-second motor run time, optimized for precise flow control. This model features an integrated SPDT auxiliary switch for position feedback or controlling secondary equipment like pumps and fans. Engineered for high-efficiency HVAC zone control, the CQKB24-S-LL utilizes brushless DC motor technology to minimize power consumption and eliminate the risk of motor burnout, ensuring consistent performance in commercial and residential heating and cooling applications.
Key Benefits for Contractors
- Integrated Supercapacitor: Provides a mechanical-spring-equivalent fail-safe without the bulk or wear, ensuring the Normally Open position during power failure.
- Auxiliary Feedback: Features a factory-set SPDT auxiliary switch for seamless integration into building automation systems (BAS).
- Simplified Installation: The press-fit connection allows for tool-free mounting to the valve body, reducing labor time on-site.
- Low Power Consumption: Consumes only 2.5W during motor operation and 0.5W in hold mode, improving overall system energy ratings.
- NEMA 2 (IP40) Housing: Durable construction suitable for plenum-rated installations in indoor HVAC environments.
Common Installation Questions
How do I verify the fail-safe direction on the CQKB24-S-LL?
This specific model is factory-configured for Fail-Open (FO) operation using stored energy. Upon loss of the 24V signal, the actuator drives the valve to the open position using the internal capacitor.
Can the auxiliary switch be adjusted in the field?
The CQKB24-S-LL auxiliary switch is set at a fixed point to indicate position status. For applications requiring custom switching points, confirm the sequence of operation matches the factory default of this LL-series model.
What is the maximum fluid temperature rating for the valve body used with this actuator?
While the actuator is rated for ambient temperatures up to 122°F, it is typically paired with Belimo CCV or zone valves rated for media temperatures between 36°F and 212°F.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Belimo CQKB24-S-LL is a specialized zone valve actuator designed for 2-way and 3-way ZoneTight valves. Operating on a 24VAC/DC power supply, this Electronic Fail-Safe (EFS) unit provides reliable Normally Open (NO) or Fail-Open (FO) functionality via a supercapacitor power bank. This technical design ensures the valve returns to its emergency position during power loss, providing critical protection in hydronic systems. The unit delivers 22 in-lb (2.5 Nm) of torque with a 75-second motor run time, optimized for precise flow control. This model features an integrated SPDT auxiliary switch for position feedback or controlling secondary equipment like pumps and fans. Engineered for high-efficiency HVAC zone control, the CQKB24-S-LL utilizes brushless DC motor technology to minimize power consumption and eliminate the risk of motor burnout, ensuring consistent performance in commercial and residential heating and cooling applications.
Key Benefits for Contractors
- Integrated Supercapacitor: Provides a mechanical-spring-equivalent fail-safe without the bulk or wear, ensuring the Normally Open position during power failure.
- Auxiliary Feedback: Features a factory-set SPDT auxiliary switch for seamless integration into building automation systems (BAS).
- Simplified Installation: The press-fit connection allows for tool-free mounting to the valve body, reducing labor time on-site.
- Low Power Consumption: Consumes only 2.5W during motor operation and 0.5W in hold mode, improving overall system energy ratings.
- NEMA 2 (IP40) Housing: Durable construction suitable for plenum-rated installations in indoor HVAC environments.
Common Installation Questions
How do I verify the fail-safe direction on the CQKB24-S-LL?
This specific model is factory-configured for Fail-Open (FO) operation using stored energy. Upon loss of the 24V signal, the actuator drives the valve to the open position using the internal capacitor.
Can the auxiliary switch be adjusted in the field?
The CQKB24-S-LL auxiliary switch is set at a fixed point to indicate position status. For applications requiring custom switching points, confirm the sequence of operation matches the factory default of this LL-series model.
What is the maximum fluid temperature rating for the valve body used with this actuator?
While the actuator is rated for ambient temperatures up to 122°F, it is typically paired with Belimo CCV or zone valves rated for media temperatures between 36°F and 212°F.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
