Belimo UGVL+LVKB24-SR Actuator

The Belimo UGVL+LVKB24-SR is a high-performance globe valve linkage and electronic fail-safe actuator assembly designed for precise control in HVAC applications. Engineered for seamless integration with Belimo globe valves, this 24V linear actuator provides a robust 112 lbf (500 N) force to ensure positive shut-off and modulating accuracy. Operating on a 2-10 VDC control signal, it offers proportional control for chilled water, hot water, or steam systems. The LVKB24-SR features a specialized electronic fail-safe mechanism, utilizing integrated capacitors to drive the valve to a predetermined position during power loss, ensuring system protection without the mechanical complexity of traditional spring-return units. Its brushless DC motor technology provides consistent torque and reduces maintenance requirements, while the field-selectable fail-direction switch allows for rapid on-site commissioning. This assembly is critical for maintaining hydronic system efficiency and precise terminal unit control in demanding commercial environments.

Key Benefits

• Proportional Control: Utilizes a 2-10 VDC feedback signal for precise positioning and optimized flow regulation.
• Reliable Fail-Safe: Integrated electronic fail-safe technology ensures the valve returns to its safety position during power interruptions.
• High Seat Pressure: Delivers 112 lbf of force, maintaining tight close-off even in high-differential pressure applications.
• Universal Compatibility: The UGVL linkage simplifies mounting on diverse globe valve bodies for retrofit or new installations.
• Low Power Consumption: Efficient motor design reduces energy overhead and allows for more units per 24VAC/DC transformer.

Common Questions

Is the fail-safe position adjustable on the LVKB24-SR?
Yes, the actuator features a switch to select the fail-direction (normally open or normally closed) depending on the needs of your specific HVAC control loop.

Can this actuator be used with a 4-20 mA control signal?
The unit natively accepts 2-10 VDC, but it can be adapted for 4-20 mA control through the installation of a 500-ohm resistor across the input leads.

What is the manual override procedure for this model?
The LVKB24-SR includes a manual crank or button that allows technicians to position the valve manually during installation or troubleshooting when power is disconnected.

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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.