Belimo B320B+LF24 Valve Assembly

The Belimo B320B+LF24 is a precision-engineered 3-way characterized control valve (CCv) assembly designed for demanding hydronic applications. This 3/4 inch NPT valve features a durable brass trim and a Cv of 14, ensuring stable flow control in heating and cooling systems. It is paired with the LF24 spring return actuator, providing 35 in-lb of torque for reliable fail-safe operation. Operating on 24Vac/dc, the assembly utilizes an on/off control signal to manage flow direction with high close-off pressure ratings. The integrated TEFZEL characterized disc maintains a true equal percentage flow characteristic, preventing hunting and improving heat exchanger efficiency. Built for longevity in commercial HVAC environments, this assembly minimizes seat wear and eliminates the need for frequent maintenance in variable flow systems.

• Fail-Safe Protection: The LF24 mechanical spring return ensures the valve returns to its programmed safety position during power loss.
• Flow Precision: The Cv 14 rating and characterized disc design prevent rapid cycling and thermal shock.
• Robust Construction: A forged brass body and specialized NPT female ends simplify installation and resist de-zincification.
• Tight Shut-off: High close-off pressure capability prevents leakage and energy waste in bypassed loops.

What is the maximum fluid temperature for the Belimo B320B?
The valve is rated for a media temperature range of 0°F to 250°F (-18°C to 120°C), making it suitable for chilled water and low-pressure steam applications.

Can the LF24 actuator be mounted in any orientation?
The assembly should be mounted with the actuator above the horizontal plane of the pipe to prevent condensate from entering the motor housing.

Is the flow characterization applicable to all three ports?
The A-port features the equal percentage characteristic, while the B-port (bypass) typically handles linear flow to maintain system balance.

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.