Belimo B209+LF24-SR Valve Assembly

The Belimo B209+LF24-SR is a precision-engineered 2-way ball valve assembly designed for high-performance modulating control in hydronic systems. Featuring a 1/2 inch NPT connection and a 0.8 Cv rating, this characterized control valve (CCV) utilizes a specialized disc to provide an equal percentage flow characteristic, ensuring stable loop control. The stainless steel trim and ball offer superior durability against scale and corrosion compared to standard brass components. Paired with the LF24-SR spring return actuator, the assembly provides 35 in-lb torque and operates on a 24VAC/DC power supply with a 2-10VDC control signal. This modulating valve actuator ensures fail-safe positioning during power loss, making it ideal for air handling units and terminal equipment. The Belimo B209 series is rated for a close-off pressure of 200 psi, providing reliable shut-off in high-differential applications common in commercial HVAC environments.

• Precise Flow Control: The integrated characterizing disc eliminates the "hunting" common in standard ball valves, providing linear thermal output.
• Fail-Safe Reliability: Mechanical spring return actuator ensures the valve returns to its home position during power interruptions.
• Maintenance-Free Design: Features a blowout-proof stem and self-cleaning ball technology to reduce service calls and prevent clogging.
• Superior Metallurgy: The 316 stainless steel ball/trim is optimized for chilled water, hot water, and 60% glycol concentrations.
• Simplified Wiring: The 2-10VDC proportional control allows for seamless integration with most BAS and DDC controllers.

What is the maximum fluid temperature for this assembly?
The Belimo B209+LF24-SR is rated for fluid temperatures ranging from 0°F to 250°F (-18°C to 120°C).

Can this valve be used for steam applications?
No, this specific CCV assembly is designed for water and glycol solutions. For steam control, a high-temperature globe valve or specialized steam ball valve is required.

Does the actuator support manual override?
Yes, the LF24-SR actuator includes a manual crank to allow for positioning during installation or commissioning without power.

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.