Belimo B310+LRB24-3 Valve Assembly

The Belimo B310+LRB24-3 is a high-performance 3-way characterized control valve (CCV) assembly engineered for precise hydronic control in demanding HVAC applications. This 1/2" NPT assembly utilizes a stainless steel ball and stem to ensure long-term durability and resistance to scaling in various fluid media, including hot or chilled water and up to 60% glycol solutions. With a Cv rating of 1.2, it is purpose-built for air handling units, fan coil units, and VAV box reheat coils where accurate flow regulation is critical for system stability.

The assembly is powered by the LRB24-3 non-spring return actuator, delivering 45 in-lb of torque. This 24Vac/Vdc actuator supports both on/off and floating control signals, providing versatility for building automation systems (BAS) and direct digital control (DDC) environments. The integrated characterizing disc provides an equal percentage flow characteristic, which linearizes the heat transfer of the coil to prevent hunting and improve overall energy efficiency. This is a maintenance-free solution designed for straightforward installation and reliable multi-positional control.

• Precise Flow Control: Integrated characterizing disc ensures an equal percentage flow characteristic, optimizing coil performance.
• Durable Construction: Features stainless steel trim and a nickel-plated forged brass body to withstand harsh hydronic environments.
• Zero Leakage: Tight close-off rating (UP to 200 psi) ensures port A to AB is 100% bubble-tight.
• Flexible Control: The LRB24-3 actuator handles both On/Off and Floating signals with a 90-second run time.
• Maintenance-Free: Brushless DC motor technology in the actuator provides consistent performance without the need for periodic adjustments.

Is the Belimo B310+LRB24-3 suitable for steam applications?
No, this characterized control valve is rated for hot and chilled water or glycol solutions up to 250°F. It is not designed for steam service.

Can I manually operate the valve if the power fails?
Yes, the LRB24-3 actuator features an external manual override push button that allows the technician to manually position the valve during commissioning or power loss.

What is the difference between port A and port B flow?
In this 3-way valve assembly, Port A features an equal percentage characteristic for precise control, while Port B (the bypass) is modified for constant common port flow.

This item is not eligible for free shipping.

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.