Description
The Belimo B263 is a heavy-duty 2-way ball valve engineered for reliable flow control in commercial and industrial chilled water and hot water HVAC systems. With a generous 110 Cv flow coefficient and a 2-1/2″ NPT connection, this valve is well-suited for medium-to-large hydronic piping applications where precise, consistent flow modulation is essential.
Equal Percentage Flow Characteristic
The B263 features an equal percentage flow characteristic, which provides a logarithmic relationship between valve position and flow rate. This characteristic delivers superior controllability across a wide range of system loads — making it the preferred choice for variable-flow hydronic systems where stable loop control is critical.
Premium Construction
- Nickel-plated forged brass valve body for corrosion resistance and long service life
- Stainless steel ball and stem for durability in demanding hydronic environments
- 2-1/2″ NPT end connections for straightforward installation into standard piping
- 2-way configuration for on/off or modulating flow control
Application Compatibility
- Designed for chilled water and hot water HVAC applications
- Rated for fluid temperatures up to 212°F (100°C) maximum
- Compatible with glycol solutions up to 60% concentration — ideal for freeze-protection systems in cold climates
- Suitable for use with Belimo actuators (sold separately) for automated control
Key Specifications
- SKU: B263
- Brand: Belimo
- Pipe Size: 2-1/2″
- Connection Type: NPT (National Pipe Thread)
- Flow Coefficient (Cv): 110
- Valve Configuration: 2-Way
- Flow Characteristic: Equal Percentage
- Body Material: Nickel-Plated Forged Brass
- Ball and Stem Material: Stainless Steel
- Maximum Fluid Temperature: 212°F
- Maximum Glycol Concentration: 60%
Why Choose the Belimo B263?
Belimo is a globally recognized leader in HVAC valve and actuator technology. The B263 reflects Belimo’s commitment to precision engineering, offering contractors and building automation professionals a valve body that pairs seamlessly with Belimo’s full line of rotary actuators. Whether you’re commissioning a new chilled water loop, retrofitting an existing hot water system, or specifying valves for a glycol-based freeze protection circuit, the B263 delivers the performance and reliability your project demands.
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