Description
The Belimo B331 is a precision-engineered 3-way ball valve designed for reliable flow control in commercial and industrial chilled water and hot water HVAC systems. Built to handle demanding hydronic applications, this valve features a nickel plated forged brass body paired with a stainless steel ball and stem, delivering exceptional corrosion resistance and long service life.
Flow Characteristics
- A-port: Equal Percentage flow characteristic for precise, proportional control across the full stroke range
- B-port: Modified flow characteristic engineered to maintain constant common port flow, ensuring system balance and stable operation
Key Specifications
- Valve Type: 3-Way Ball Valve
- Pipe Size: 1-1/4″ (1.25″)
- Connection Type: NPT (National Pipe Thread)
- Flow Coefficient (Cv): 25
- Body Material: Nickel Plated Forged Brass
- Ball and Stem Material: Stainless Steel
- Maximum Temperature: 250°F
- Applications: Chilled Water and Hot Water HVAC Systems
Design & Construction
The B331’s nickel plated forged brass body provides superior strength and resistance to corrosion in both chilled and hot water environments. The stainless steel ball and stem ensure smooth, reliable actuation cycle after cycle, minimizing maintenance requirements and extending the service life of the valve assembly. The 3-way configuration allows for mixing or diverting service, making it highly versatile for a wide range of hydronic system designs.
Application Highlights
- Ideal for chilled water cooling coil control
- Suitable for hot water heating coil control up to 250°F
- Compatible with Belimo actuators for automated control
- Designed for use in commercial and light industrial HVAC systems
- Supports both mixing and diverting configurations
Why Choose Belimo
Belimo is a globally recognized leader in HVAC actuator and valve technology, known for innovative designs, superior build quality, and energy-efficient solutions. The B331 reflects Belimo’s commitment to precision flow control, making it a trusted choice for mechanical contractors, engineers, and building automation professionals.
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