The Belimo B310B is a precision-engineered 3-way ball valve designed for reliable flow control in both chilled water and hot water HVAC hydronic systems. Built with a nickel-plated forged brass body, a chrome-plated brass ball, and a nickel-plated brass stem, this valve delivers exceptional durability and corrosion resistance in demanding commercial and industrial applications.
Flow Characteristics
- A-port features Equal Percentage flow characteristic for precise, proportional control across the full range of travel
- B-port is Modified for constant common port flow, ensuring stable system performance and balanced hydronic operation
- Flow coefficient (Cv): 1.2 — ideal for low-flow, precision-control applications
Construction & Materials
- Body: Nickel-plated forged brass for superior strength and corrosion resistance
- Ball: Chrome-plated brass for smooth, long-lasting operation
- Stem: Nickel-plated brass for reliable actuation and extended service life
- Connection: 1/2″ NPT threaded ports for straightforward installation
Performance Specifications
- Valve configuration: 3-way mixing or diverting
- Pipe size: 1/2″ NPT
- Flow coefficient (Cv): 1.2
- Maximum operating temperature: 250°F — suitable for both chilled and hot water service
Applications
- Chilled water coil control in air handling units and fan coil units
- Hot water heating coil control
- Mixing and diverting service in commercial hydronic systems
- Building automation and DDC control systems when paired with a compatible Belimo actuator
Why Choose the Belimo B310B?
Belimo is a globally recognized leader in HVAC valve and actuator technology. The B310B combines robust brass construction with advanced flow characterization to deliver precise, energy-efficient hydronic control. Its 250°F maximum temperature rating makes it equally at home in hot water heating and chilled water cooling applications, while the NPT threading simplifies installation in standard piping systems. Pair with a compatible Belimo actuator for a complete, factory-matched valve and actuator assembly.
