Description
The Belimo B313 is a high-performance 3-way ball valve engineered for precision flow control in commercial and industrial chilled water and hot water HVAC systems. Built with a nickel-plated forged brass body and a stainless steel ball and stem, this valve delivers long-lasting corrosion resistance and reliable operation across a wide range of hydronic applications.
Flow Characteristics
The B313 features a dual-port flow design optimized for balanced system performance:
- A-port: Equal Percentage flow characteristic for precise, proportional flow control
- B-port: Modified flow characteristic engineered to maintain constant flow at the common port
- 3-way configuration supports mixing or diverting applications
Key Specifications
- Valve Type: 3-Way Ball Valve
- Pipe Size: 1/2″ NPT
- Flow Coefficient (Cv): 4.7
- Maximum Temperature: 250°F — suitable for both chilled and hot water service
- Body Material: Nickel-Plated Forged Brass
- Ball and Stem Material: Stainless Steel
- End Connection: NPT (National Pipe Thread)
Application
The Belimo B313 is designed for use in chilled water and hot water hydronic systems, including fan coil units, air handling units, heat exchangers, and terminal unit applications. The stainless steel ball and stem construction ensures durability in demanding environments, while the nickel-plated brass body provides excellent resistance to corrosion.
Why Choose the Belimo B313?
- Dual flow characteristics (A-port equal percentage / B-port modified) for optimized system balance
- Stainless steel ball and stem for superior corrosion resistance and long service life
- Nickel-plated forged brass body for robust, leak-free performance
- 250°F maximum temperature rating supports both heating and cooling applications
- Compatible with Belimo actuators for automated control integration
- 1/2″ NPT connection for easy installation in standard piping systems







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