Belimo B219+LRB24-SR Valve Assembly

The Belimo B219+LRB24-SR is a precision-engineered 2-way characterized control valve (CCV) assembly designed for high-performance hydronic control in HVAC systems. Featuring a 3/4 inch NPT connection and a Cv of 10, this valve utilizes a stainless steel ball and stem to ensure long-term durability and resistance against scaling or corrosion. The assembly is paired with the LRB24-SR non-spring return actuator, providing 45 in-lb of torque and accepting a 2-10 VDC proportional control signal. With a 0% leakage rate and a specialized A-piece characterizing disc, this unit maintains an equal percentage flow characteristic, preventing hunting and improving heat exchanger efficiency. Built for tight shut-off requirements up to 200 psi, the LRB24-SR actuator operates on 24VAC/DC, offering reliable modulating control for air handling units and chilled beams where precise temperature regulation is critical for building automation performance.

Key Benefits

• Optimized Flow Control: The integrated characterizing disc ensures an equal percentage flow curve, stabilizing loop control and reducing actuator wear.
• Maintenance-Free Design: Features a blow-out proof stem and double O-ring seal technology to eliminate the need for packing adjustments.
• High Close-off Pressure: Provides a 200 psi close-off rating, ensuring the proportional control valve remains sealed against high pump heads.
• Contractor-Friendly Installation: The LRB24-SR actuator features a universal push-button manual override and a simple 2-10 VDC feedback signal for easy commissioning.

Common Questions

Can I mount this assembly in any orientation?
The assembly should be mounted with the actuator above the horizontal plane of the pipe to prevent condensation from entering the motor housing.

What is the maximum fluid temperature rating?
The Belimo B219 series is rated for chilled or hot water and 60% glycol solutions with a temperature range of 0°F to 250°F (-18°C to 120°C).

Does this unit require a specific control signal transformer?
The 24V modulating actuator requires a Class 2 power supply. Ensure your transformer is sized for the 2.5W power consumption and 4VA transformer sizing.

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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.