Belimo B223+LF24-S Valve Assembly

The Belimo B223+LF24-S Valve Assembly is a high-performance 1" 2-way characterized control valve (CCV) engineered for precision fluid control in HVAC systems. This assembly features a stainless steel trim and a Cv of 10, making it ideal for managing chilled or hot water applications. The valve is coupled with an LF24-S spring return actuator, providing 35 in-lb of torque. Designed for reliable on/off 24Vac/Vdc control, the actuator includes an integrated auxiliary switch for position feedback or safety interlocking. The NPT threaded connections and blowout-proof stem design ensure long-term durability in closed-loop hydronic systems, resisting high differential pressures while maintaining 0% leakage.

Key Benefits:

• Corrosion Resistance: Stainless steel ball and stem prevent pitting and debris buildup in aggressive water conditions.
• Fail-Safe Operation: Mechanical spring return ensures the valve moves to a safe position during power loss.
• Precise Flow Control: Tefzel characterized discs provide equal percentage flow characteristics for stable coil performance.
• Auxiliary Feedback: Built-in SPDT switch allows for easy status monitoring and sequence confirmation.
• Low Maintenance: High-cycle life design reduces downtime and replacement frequency in industrial and commercial plants.

Common Questions:

What is the maximum differential pressure for the B223+LF24-S?
The Belimo B223 series is typically rated for a maximum differential pressure of 50 psi for quiet operation and a close-off pressure of 200 psi.

Is this valve suitable for steam applications?
No, this CCV assembly is designed specifically for water and glycol solutions. For steam, a globe valve or a high-temperature rated VPP series is recommended.

Can I modify the fail-safe direction?
Yes, the fail-safe direction (normally open or normally closed) is determined by the mounting orientation of the LF actuator on the valve linkage.

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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.