Belimo B340+ARB24-3 Valve Assembly

The Belimo B340+ARB24-3 is a heavy-duty 3-way characterized control valve (CCV) assembly engineered for high-performance hydronic systems. Featuring a 1-1/2 inch NPT connection and a robust 37 Cv rating, this valve utilizes a stainless steel trim to ensure long-term reliability in demanding HVAC environments. The assembly is powered by the ARB24-3 non-spring return actuator, providing 180 in-lb of torque for precise fluid control. Designed for versatility, the actuator supports on/off and floating control signals and operates on both 24VAC and 24VDC power supplies. This Belimo valve assembly is optimized for mixing or diverting applications, incorporating a specialized characterized disc that linearizes the flow curve, effectively preventing hunting and stabilizing loop temperatures in commercial boiler and chiller setups.

Key Technical Benefits:

• Zero leakage performance thanks to the PTFE seats and EPDM O-rings, maintaining system pressure and efficiency.
• Corrosion-resistant stainless steel ball and stem compatible with chilled or hot water and up to 60% glycol solutions.
• 180 in-lb high-torque actuator ensures positive close-off even in high-differential pressure scenarios.
• Universal 24V compatibility simplifies field wiring for contractors using various controller types.
• NEMA 2/IP54 rated housing provides protection for the internal drive gears in mechanical room conditions.

Common Installation Questions:

Is the Belimo B340+ARB24-3 suitable for steam applications?
No, this 1.5 inch 3-way valve is specifically designed for hydronic systems (water and glycol); it is not rated for steam service.

Can I change the fail position of this actuator?
The ARB24-3 is a non-spring return actuator; it will maintain its last position upon loss of power. For applications requiring a safety return, a spring-return model would be necessary.

How does the characterized disc affect flow control?
The disc transforms the naturally high-gain flow of a ball valve into an equal-percentage curve, allowing for precise modulating control at low opening angles.

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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.