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Belimo B221B+LRB24-SR 3/4 in 2-Way Characterized Control Valve
- Regular price
- $675.00
- Sale price
- $675.00
- Regular price
-
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Product Description P/N: B221B+LRB24-SR
Description
The Belimo B221B+LRB24-SR is a 2-way characterized control valve with a modulating 24 VAC/VDC actuator for hydronic HVAC applications. It provides a 24 Cv flow coefficient, equal-percentage flow control, and 2–10 VDC control for chilled or hot water systems containing up to 60% glycol.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC Controls |
| Part Number | B221B+LRB24-SR |
| Subcategory | Characterized Control Valves |
| Valve Pattern | 2-way |
| Valve Size | 3/4 in [20 mm] |
| Flow Coefficient | 24 Cv |
| Flow Characteristic | Equal percentage |
| Valve Type | Characterized Control |
| End Fitting | Internal thread / NPT female |
| Valve Material | Forged nickel-plated brass |
| Fluid | Chilled or hot water, up to 60% glycol |
| Pressure Rating | 600 psi |
| Close-Off Pressure | 200 psi |
| Actuator Type | Electric, non-fail-safe, modulating |
| Power Source | 24 VAC/VDC |
| Control Input | 2–10 VDC |
| Torque | 45 in-lb |
| Running Time | 90 s |
| Power Consumption | 1.5 W running; 0.4 W holding |
| Wire Sizing Rating | 3 VA |
| NEMA Rating | NEMA 2 |
| Ambient Temperature | -22°F to 122°F [-30°C to 50°C] |
| Fluid Temperature Range | 0°F to 250°F [-18°C to 120°C] |
| Electrical Connection | 3 ft [1 m], 18 GA plenum cable with 1/2 in conduit connector |
| Rotation | 90° |
| Weight | 2.3 lbs |
Information About B221B+LRB24-SR
The B221B+LRB24-SR combines a forged nickel-plated brass valve body with a non-fail-safe electric actuator rated for 24 VAC/VDC operation. Its 3/4-inch internally threaded connections and characterized ball design are suited to variable-flow hydronic systems used with heating and cooling coils. The actuator provides 45 in-lb of torque with a 90-second nominal running time and accepts a modulating 2–10 VDC control signal. The assembly is designed for water temperatures from 0°F to 250°F (-18°C to 120°C) and ambient temperatures from -22°F to 122°F (-30°C to 50°C).
Key Features:
- Valve Pattern: 2-way characterized control valve for hydronic flow regulation.
- Flow Coefficient: Provides a 24 Cv flow coefficient for the specified valve size.
- Flow Characteristic: Equal-percentage characteristic for modulating HVAC applications.
- Actuator Control: Accepts a 2–10 VDC modulating control signal.
- Operating Voltage: Supports AC/DC 24 V power input.
- Actuator Torque: Delivers 45 in-lb of actuator torque for valve positioning.
- Fluid Compatibility: Suitable for chilled or hot water containing up to 60% glycol.
- Enclosure Rating: NEMA 2 and UL Enclosure Type 2 protection for the actuator housing.
The B221B+LRB24-SR delivers the reliability and precision required for modulating hydronic heating and cooling control in HVAC systems.
Description
The Belimo B221B+LRB24-SR is a 2-way characterized control valve with a modulating 24 VAC/VDC actuator for hydronic HVAC applications. It provides a 24 Cv flow coefficient, equal-percentage flow control, and 2–10 VDC control for chilled or hot water systems containing up to 60% glycol.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | HVAC Controls |
| Part Number | B221B+LRB24-SR |
| Subcategory | Characterized Control Valves |
| Valve Pattern | 2-way |
| Valve Size | 3/4 in [20 mm] |
| Flow Coefficient | 24 Cv |
| Flow Characteristic | Equal percentage |
| Valve Type | Characterized Control |
| End Fitting | Internal thread / NPT female |
| Valve Material | Forged nickel-plated brass |
| Fluid | Chilled or hot water, up to 60% glycol |
| Pressure Rating | 600 psi |
| Close-Off Pressure | 200 psi |
| Actuator Type | Electric, non-fail-safe, modulating |
| Power Source | 24 VAC/VDC |
| Control Input | 2–10 VDC |
| Torque | 45 in-lb |
| Running Time | 90 s |
| Power Consumption | 1.5 W running; 0.4 W holding |
| Wire Sizing Rating | 3 VA |
| NEMA Rating | NEMA 2 |
| Ambient Temperature | -22°F to 122°F [-30°C to 50°C] |
| Fluid Temperature Range | 0°F to 250°F [-18°C to 120°C] |
| Electrical Connection | 3 ft [1 m], 18 GA plenum cable with 1/2 in conduit connector |
| Rotation | 90° |
| Weight | 2.3 lbs |
Information About B221B+LRB24-SR
The B221B+LRB24-SR combines a forged nickel-plated brass valve body with a non-fail-safe electric actuator rated for 24 VAC/VDC operation. Its 3/4-inch internally threaded connections and characterized ball design are suited to variable-flow hydronic systems used with heating and cooling coils. The actuator provides 45 in-lb of torque with a 90-second nominal running time and accepts a modulating 2–10 VDC control signal. The assembly is designed for water temperatures from 0°F to 250°F (-18°C to 120°C) and ambient temperatures from -22°F to 122°F (-30°C to 50°C).
Key Features:
- Valve Pattern: 2-way characterized control valve for hydronic flow regulation.
- Flow Coefficient: Provides a 24 Cv flow coefficient for the specified valve size.
- Flow Characteristic: Equal-percentage characteristic for modulating HVAC applications.
- Actuator Control: Accepts a 2–10 VDC modulating control signal.
- Operating Voltage: Supports AC/DC 24 V power input.
- Actuator Torque: Delivers 45 in-lb of actuator torque for valve positioning.
- Fluid Compatibility: Suitable for chilled or hot water containing up to 60% glycol.
- Enclosure Rating: NEMA 2 and UL Enclosure Type 2 protection for the actuator housing.
The B221B+LRB24-SR delivers the reliability and precision required for modulating hydronic heating and cooling control in HVAC systems.
