Belimo B280 Ball Valve

The Belimo B280 is a high-performance 3-inch NPT 2-way characterised control valve designed for demanding hydronic applications in commercial HVAC systems. Engineer for precision, this 170 Cv ball valve features a nickel-plated forged brass body paired with a stainless steel ball and stem, ensuring long-term durability and resistance to scaling in both chilled water and hot water systems. The integrated equal percentage flow characteristic is achieved via a specialized glass-filled PTFE indexing disc, providing stable modulating control and eliminating "hunting" in your control loops. Rated for fluid temperatures up to 212°F and compatible with up to 60% glycol solutions, the B280 handles high-flow requirements with a close-off pressure of 100 psi. This Belimo B-series valve is the industry standard for contractors requiring reliable flow regulation in air handling units and large heat exchangers where bubble-tight shut-off is non-negotiable.

• Corrosion Resistance: The 316 stainless steel trim prevents premature failure in aggressive water conditions.
• Precise Modulation: Equal percentage inserts provide linear heat transfer in hydronic coils for superior AEO performance.
• High Flow Capacity: A 170 Cv rating allows for significant volume with minimal pressure drop across the 3" NPT ports.
• Zero Leakage: Rated for ANSI Class VI leakage, ensuring total isolation when the valve is in the closed position.
• Actuator Compatibility: Designed for seamless integration with Belimo ARB, GRB, and AF series actuators.

What is the maximum differential pressure for the Belimo B280?
The B280 is designed for a maximum differential pressure of 50 psi for typical control applications to maintain quiet operation and prevent cavitation.

Can this valve be used in steam applications?
No, the B280 is specifically rated for chilled or hot water and glycol solutions up to 212°F; it is not intended for steam service.

What is the purpose of the thermal tee or neck extension?
On the B280, the extended neck allows for easy insulation of the piping without burying the actuator mounting flange, preventing condensation buildup.

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.