Description
The Belimo B221 is a high-performance 2-way ball valve engineered for reliable flow control in commercial and industrial hydronic systems. Designed for both chilled and hot water applications, this valve delivers consistent, precise modulation thanks to its equal percentage flow characteristic — making it an ideal choice for variable flow HVAC systems where accurate temperature control is critical.
Construction & Materials
- Nickel-plated forged brass body for superior corrosion resistance and long service life
- Stainless steel ball and stem for durability in demanding hydronic environments
- 3/4″ NPT end connections for straightforward installation into standard piping systems
Flow & Performance Specifications
- Flow coefficient (Cv): 24
- Flow characteristic: Equal percentage — provides proportional flow control across the full stroke range
- Configuration: 2-way (single inlet, single outlet)
- Maximum fluid temperature: 212°F (100°C)
- Compatible with up to 60% glycol solution for freeze-protection in cold-climate applications
Applications
- Chilled water coil control in air handling units and fan coil units
- Hot water heating coils and terminal units
- Hydronic systems requiring glycol antifreeze solutions
- Commercial HVAC building automation and controls integration
Why Choose the Belimo B221?
Belimo is a globally recognized leader in actuator and valve technology for HVAC applications. The B221 is designed to pair seamlessly with Belimo actuators, offering a complete, factory-matched valve-and-actuator solution. The equal percentage flow characteristic ensures stable, energy-efficient control across varying load conditions, reducing energy consumption and improving occupant comfort. The robust nickel-plated brass body and stainless steel internals ensure long-term reliability even in aggressive glycol-treated water systems.
Reviews
There are no reviews yet.