Check the listing for details. Belimo B210B+LRB24-SR-T 2-Way 1/2" Control Valve. Condition: New. Listed at 99.99 USD. The Belimo B210B+LRB24-SR-T is a 2-way control valve designed for HVAC systems. With a voltage of 24V, this valve is ideal for efficient control of heating and cooling systems. The Belimo brand is known for its high-quality products in the HVAC industry, making this control valve a reliable choice for maintaining optimal temperatures in commercial or industrial settings. The model number B210B+LRB24-SR-T further signifies its specific design and functionality within the Belimo product line.