Belimo LR24-3 US Pneumatic Actuator

Belimo LR24-3 US Pneumatic Actuator is a two-position damper actuator in Belimo's LR family that uses compressed air to move dampers between open and closed positions. It is intended for HVAC applications where automatic damper control is required by building-automation systems that rely on pneumatic signals. The LR24-3 US supports On/Off control with floating point positioning, enabling stable two-position operation with the option for intermediate damper positioning depending on the control signal, and is designed to mount with Belimo LR-series damper assemblies. Typical applications include dampers in air-handling units, central plants, and other commercial HVAC installations that demand robust pneumatic actuation. This model operates without electrical actuation, relying on a ready supply of compressed air to actuate the damper and integrate with pneumatic control schemes across legacy and modernized systems. Because it is a pneumatic device, installation generally avoids electrical actuation wiring on the actuator itself, with control signals delivered through external pneumatic lines and compatible with standard Belimo pneumatic circuits.