Belimo B215HT455+TFRB24SR Valve Assembly

The Belimo B215HT455+TFRB24SR is a high-temperature 2-way characterizable control valve (HT-CCV) assembly engineered for precise modulation in demanding hydronic systems. Featuring a 1/2 inch NPT connection and a 4.55 Cv rating, this valve utilizes a specialized ETFE flow characterizing disc to provide a linear flow characteristic, preventing hunt-and-peck cycling in multi-stack heat exchangers or steam-to-water applications. The assembly is driven by the TFRB24SR spring return actuator, delivering 18 in-lb of torque with a 2-10VDC proportional signal. Operating on a 24VAC/DC power supply, the fail-safe mechanical spring ensures the valve returns to its designated safety position during power loss. With a maximum fluid temperature rating of 250°F and a close-off pressure of 200 psi, this Belimo valve assembly maintains tight shut-off and stable control under significant differential pressures, making it a reliable choice for high-pressure hot water and low-pressure steam applications.

• Precise Flow Control: The 4.55 Cv rating combined with HT-CCV technology ensures accurate proportional control for heating and cooling coils.
• Fail-Safe Security: Integrated TFRB24SR actuator provides mechanical spring return for system protection during power interruptions.
• High Temperature Resilience: Designed to handle medium temperatures up to 250°F, ideal for high-temperature hot water systems.
• Compact Envelope: The 1/2" NPT footprint allows for easy installation in tight mechanical closets or terminal unit enclosures.
• Reliable Close-off: Rated for a 200 psi close-off, minimizing leakage and improving system efficiency.

Common Questions

What is the control signal for this assembly?
The TFRB24SR actuator operates on a standard 2-10VDC control signal, allowing for seamless integration with most BAS and DDC controllers.

Can this valve be used for steam applications?
Yes, the B215HT455 is part of the High-Temperature CCV series rated for low-pressure steam applications up to 15 psi.

Does this assembly fail open or fail closed?
The fail-safe direction is determined at the time of installation by the mounting orientation of the TFRB actuator on the valve stem.

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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.