Description
The Belimo B349 is a high-performance 2″ NPT, 3-way ball valve engineered for demanding chilled water and hot water hydronic applications. Featuring a nickel-plated forged brass body with a stainless steel ball and stem, this valve delivers exceptional corrosion resistance and long service life in both heating and cooling systems.
Flow Characteristics
The B349 is designed with dual-port flow optimization to suit a wide range of system configurations:
- A-Port: Equal percentage flow characteristic for precise, stable control across the full range of valve travel
- B-Port: Modified flow characteristic engineered to maintain constant common port flow, reducing system pressure fluctuations
- Flow Coefficient (Cv): 46 — suitable for high-flow commercial and industrial hydronic circuits
Construction & Materials
- Body: Nickel-plated forged brass for superior strength and corrosion resistance
- Ball and Stem: Stainless steel for durability and long-term reliability
- Connection: 2″ NPT threaded end connections for easy field installation
- Configuration: 3-way mixing or diverting valve
Ratings & Compatibility
- Maximum Temperature: 250°F — suitable for both chilled water and hot water systems
- Media: Chilled water and hot water hydronic applications
- Designed to pair with Belimo actuators for automated control in commercial HVAC systems
Applications
- Commercial and industrial hydronic heating and cooling systems
- Fan coil units, air handling units, and terminal equipment
- Building automation and energy management systems
- Variable flow and constant flow hydronic circuits
The Belimo B349 is the trusted choice for HVAC professionals who demand precision flow control, robust construction, and compatibility with modern building automation systems. Its dual-port flow engineering ensures optimal system balance whether used in mixing or diverting service.
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