Description
The Belimo B211B+TR24-SR-T US is a characterized control valve assembly designed for precise modulating control of hydronic HVAC systems. Combining a 2-way CCV valve with a non-spring return actuator, it supports accurate flow regulation using a 24 VAC/DC 2–10 V control signal.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
Control Valves |
| Part Number |
B211B+TR24-SR-T US |
| Subcategory |
Characterized Control Valves |
| Valve Type |
Characterized Control Valve (CCV) |
| Valve Size |
0.5 in (DN 15) |
| Flow Pattern |
2-way |
| Flow Coefficient |
Cv 1.9 |
| Flow Characteristic |
Equal percentage |
| Controllable Flow Range |
75° |
| Leakage Rate |
0% for A–AB |
| Body Pressure Rating |
600 psi |
| Close-Off Pressure |
200 psi |
| Fluid Compatibility |
Chilled water, hot water, up to 60% glycol |
| Fluid Temperature Range |
0…250°F (-18…120°C) |
| Pipe Connection |
NPT female |
| Actuator Type |
Non spring return |
| Control Type |
Modulating |
| Control Signal |
2…10 V (4…20 mA with resistor) |
| Nominal Voltage |
AC/DC 24 V |
| Power Consumption |
0.5 W |
| Transformer Sizing |
1 VA |
| Electrical Connection |
Screw terminals, 26–14 AWG |
| Angle of Rotation |
90° |
| Protection Rating |
IP40, NEMA 1 |
| Weight |
1.43 lb |
Information About B211B+TR24-SR-T US
The B211B+TR24-SR-T US is part of Belimo’s compact CCV valve assemblies engineered for stable and energy-efficient hydronic control. The characterized valve design provides a predictable equal percentage flow response, improving control accuracy across varying load conditions. Fitted with a non-fail-safe TR24 actuator, the assembly supports smooth modulating operation and low power consumption for continuous control applications. This valve-actuator combination is commonly used in terminal units, fan coil systems, and small heating or cooling circuits within commercial buildings.
Key Features
- Characterized Control Valve Design: Provides an equal percentage flow characteristic that improves control stability and accuracy across the full operating range.
- Integrated Valve and Actuator Assembly: Factory-fitted configuration ensures proper mechanical alignment, reliable performance, and simplified installation.
- Non Spring Return Actuation: Supports continuous modulating control where fail-safe positioning is not required, reducing mechanical complexity.
- 2–10 V Modulating Control: Enables precise proportional flow control with optional 4–20 mA capability for flexible integration with automation systems.
- Low Power Consumption: Operates at just 0.5 W, supporting energy-efficient system design and reduced operating costs.
- Manual Override Handle: Allows direct manual positioning during commissioning, testing, or maintenance without electrical power.
- Tight Shutoff Performance: Achieves 0% leakage for A–AB ports, supporting accurate flow isolation and improved system efficiency.
The B211B+TR24-SR-T US delivers the reliability and precision required for accurate modulating hydronic flow control in commercial HVAC applications.
