The Belimo B248 is a high-performance 2-way characterized control valve designed for precision flow regulation in hydronic systems. Featuring a 2-inch NPT connection and a 29 Cv rating, this valve utilizes a specialized Acurrol flow-characterizing disc to maintain an equal percentage flow characteristic, ensuring linear heat transfer across the coil. The body is constructed from nickel-plated forged brass, paired with a 304 stainless steel ball and stem to resist corrosion and scaling in demanding environments. Engineered for versatility, it handles chilled or hot water up to 212°F and is compatible with up to 60% glycol solutions. The blowout-proof stem design and EPDM O-rings provide reliable sealing and 0% leakage (ANSI Class VI), making it a preferred choice for VAV reheat coils, AHUs, and fan coil units. Its high close-off pressure rating ensures stability even in systems with fluctuating differential pressures. Key Technical Benefits: Precision Flow Control: The integrated characterizing disc eliminates the typical "jump" in flow seen in standard ball valves, providing stable control at low part-load conditions. Severe Service Construction: The stainless steel ball and stem significantly extend service life compared to chrome-plated brass alternatives, especially in open loops or systems with high oxygen content. High Rangeability: Offers a rangeability of 75:1 or greater, allowing for granular control across the entire stroke of the actuator. Simplified Installation: The compact forged brass body fits into tight mechanical spaces and integrates seamlessly with LR, AR, and AK series actuators. Common Technical Inquiries: What is the maximum differential pressure for the B248? This valve is rated for a maximum close-off pressure of 200 psi, ensuring it remains shut against high pump heads without bypassing. Can this valve be used for steam applications? No, the Belimo B248 is specifically engineered for water and glycol-based hydronic systems with a maximum temperature of 212°F. Which actuators are compatible with the B248? It is designed for use with Belimo’s non-spring return and spring return actuators, including the LRB, ARB, and AKR series, depending on your torque and fail-safe requirements. 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.
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