Belimo B209 Valve

The Belimo B209 is a precision-engineered 1/2 inch NPT 2-way ball valve designed for modulating control in hydronic systems. Featuring a 0.8 Cv flow coefficient, this characterising control valve utilizes a specialized disc to provide an equal percentage flow characteristic, ensuring linear heat output and stable loop control. The construction consists of a nickel-plated forged brass body paired with a 316 stainless steel ball and stem, making it highly resistant to scaling and corrosion in demanding HVAC environments. This valve is rated for a maximum fluid temperature of 212°F (100°C) and is fully compatible with chilled or hot water systems containing up to 60% glycol solution. The blowout-proof stem design and high close-off pressure rating make the Belimo B209 stainless steel ball valve a reliable choice for VAV reheat coils, fan coils, and unit ventilators where precise flow regulation is critical for system efficiency.

• Corrosion Resistance: The 316 stainless steel trim ensures longevity when used with aggressive water chemistries or high-temperature hydronic loops.
• Precise Control: The integrated characterizing disc eliminates the "hunting" common in standard ball valves, providing linear control and reducing actuator wear.
• Leak Protection: Features a zero-leakage rating (A-rated) to prevent energy waste and ghost flow in closed-loop systems.
• Versatile Media Handling: Industrial-grade seals accommodate ethylene or propylene glycol mixtures up to 60% concentration without degradation.

What actuators are compatible with the B209?
This valve is designed to pair with Belimo LR, AR, and KR series actuators. Use a non-spring return or spring-return linkage depending on your fail-safe requirements.

Can this valve be installed in any orientation?
Vertical or horizontal installation is acceptable, provided the actuator remains above the horizontal plane of the pipe to prevent condensate from entering the motor housing.

Is the B209 suitable for steam applications?
No, this specific model is rated for water and glycol solutions up to 212°F. For low-pressure steam, a high-temperature or specialized steam-rated valve body is required.

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.