Belimo B323+LF24-MFT Valve Assembly

The Belimo B323+LF24-MFT Valve Assembly is a high-performance 1 inch 3-way characterized control valve designed for demanding hydronic applications in air handling units and fan coil systems. This assembly features a stainless steel ball and stem to resist corrosion and ensure longevity in closed-loop systems. With a Cv of 10, it provides precise modulating control using Belimo’s unique characterizing disc, which creates an equal percentage flow characteristic for stable temperature regulation. The integrated LF24-MFT actuator delivers 35 in-lb of torque and incorporates Multi-Function Technology, allowing for a wide range of control inputs including 4-20mA (via 500 Ohm resistor), 2-10VDC, PWM, and floating point. The spring return fail-safe mechanism ensures the valve moves to a safety position upon power loss, while the brushless DC motor provides overload protection and quiet operation. Designed for 24VAC/DC power, this NPT-threaded assembly is the professional choice for contractors seeking reliable flow control in bypass loops and reheat coils.

• Precise Flow Control: The integral characterizing disc ensures an equal percentage flow curve, preventing hunting in HVAC control loops.
• Durable Construction: Features stainless steel trim and a nickel-plated brass body rated for 600 psi to withstand harsh hydronic conditions.
• Configurable Technology: The MFT actuator is programmable, allowing field adjustments of control signals and running times via the Belimo Assistant Tool.
• Fail-Safe Reliability: Provides consistent spring return mechanical backup to prevent system damage during power failures.
• Zero Leakage: Tight shut-off on Port A (0% leakage) maintains system efficiency and prevents thermal energy waste.

Can I use this 3-way valve for both mixing and diverting applications?
Yes, the Belimo B323 is designed for both mixing and diverting flow patterns in hydronic systems, though it is primarily utilized for mixing in coil applications.

What control signals are compatible with the LF24-MFT actuator?
The LF24-MFT programmable actuator supports proportional 2-10VDC, 4-20mA, pulse width modulation (PWM), and floating point signals, covering almost all Building Automation Systems.

Is this valve suitable for steam applications?
No, this assembly is engineered for chilled or hot water and glycol solutions up to 60%. It is not rated for steam use.

This item is not eligible for free shipping.

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.