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B349+AFRB24-SR | Belimo Three Way Characterized Control Valve With Spring Return Actuator 24V
- Regular price
- $1,367.00
- Sale price
- $1,367.00
- Regular price
-
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Product Description P/N: B349+AFRB24-SR
Description
The Belimo B349+AFRB24-SR is a factory-assembled characterized control valve with a spring return actuator designed for precise modulating control of hydronic HVAC systems. It combines a 3-way DN 2 inch valve with a 24 V actuator to deliver accurate flow regulation and reliable fail-safe operation.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Control Valves |
| Part Number | B349+AFRB24-SR |
| Subcategory | Characterized Control Valves |
| Valve Size | 2 in [50 mm] |
| Valve Type | 3-way mixing/diverting |
| Cv Rating | 46 |
| Fluid Type | Chilled or hot water, up to 60% glycol |
| Fluid Temperature Range | -18…120°C [0…250°F] |
| Body Pressure Rating | 400 psi |
| Close-Off Pressure | 200 psi |
| Flow Characteristic | Equal percentage A-port |
| Leakage Rate | 0% A–AB, <2% B–AB |
| Pipe Connection | NPT female |
| Nominal Voltage | AC/DC 24 V |
| Control Signal | 2…10 V (4…20 mA with resistor) |
| Power Consumption (Operation) | 5.5 W |
| Power Consumption (Rest) | 3 W |
| Transformer Sizing | 8.5 VA |
| Position Feedback | 2…10 V |
| Actuator Rotation | 90° |
| Running Time (Motor) | 95 s / 90° |
| Running Time (Fail-Safe) | <20 s |
| Degree of Protection | IP54 / NEMA 2 |
| Weight | 10.9 lb |
Information About B349+AFRB24-SR
The B349+AFRB24-SR is part of Belimo’s characterized control valve portfolio engineered to optimize hydronic system efficiency and control accuracy. The valve body is constructed from nickel-plated brass with stainless steel internal components to ensure durability and stable performance under varying pressure and temperature conditions. Its integrated spring return actuator provides proportional control via a 2…10 V signal and ensures automatic return to a defined safety position during power loss. Factory assembly and testing of the valve and actuator reduce installation time while ensuring reliable operation in commercial HVAC applications.
Key Features
- Characterized Three Way Valve Design: Provides precise flow control with equal percentage characteristics on the A-port and optimized B-port flow for stable mixing or diverting operation.
- Integrated Spring Return Actuator: Ensures automatic fail-safe positioning during power loss to protect equipment and maintain system safety.
- High Cv Performance: Cv 46 rating supports efficient flow control for medium to large hydronic circuits with minimal pressure loss.
- Wide Fluid Compatibility: Designed for chilled and hot water systems with glycol concentrations up to 60 percent.
- Modulating Control Capability: Supports 2…10 V control input with optional 4…20 mA configuration for compatibility with modern building automation systems.
- Durable Valve Construction: Nickel-plated brass body with stainless steel and PTFE components ensures long service life and low leakage performance.
- Integrated Position Feedback: Provides a 2…10 V feedback signal for continuous monitoring and closed-loop system control.
The B349+AFRB24-SR delivers the reliability and precision required for accurate hydronic flow modulation and dependable fail-safe valve control in HVAC systems.
Description
The Belimo B349+AFRB24-SR is a factory-assembled characterized control valve with a spring return actuator designed for precise modulating control of hydronic HVAC systems. It combines a 3-way DN 2 inch valve with a 24 V actuator to deliver accurate flow regulation and reliable fail-safe operation.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Control Valves |
| Part Number | B349+AFRB24-SR |
| Subcategory | Characterized Control Valves |
| Valve Size | 2 in [50 mm] |
| Valve Type | 3-way mixing/diverting |
| Cv Rating | 46 |
| Fluid Type | Chilled or hot water, up to 60% glycol |
| Fluid Temperature Range | -18…120°C [0…250°F] |
| Body Pressure Rating | 400 psi |
| Close-Off Pressure | 200 psi |
| Flow Characteristic | Equal percentage A-port |
| Leakage Rate | 0% A–AB, <2% B–AB |
| Pipe Connection | NPT female |
| Nominal Voltage | AC/DC 24 V |
| Control Signal | 2…10 V (4…20 mA with resistor) |
| Power Consumption (Operation) | 5.5 W |
| Power Consumption (Rest) | 3 W |
| Transformer Sizing | 8.5 VA |
| Position Feedback | 2…10 V |
| Actuator Rotation | 90° |
| Running Time (Motor) | 95 s / 90° |
| Running Time (Fail-Safe) | <20 s |
| Degree of Protection | IP54 / NEMA 2 |
| Weight | 10.9 lb |
Information About B349+AFRB24-SR
The B349+AFRB24-SR is part of Belimo’s characterized control valve portfolio engineered to optimize hydronic system efficiency and control accuracy. The valve body is constructed from nickel-plated brass with stainless steel internal components to ensure durability and stable performance under varying pressure and temperature conditions. Its integrated spring return actuator provides proportional control via a 2…10 V signal and ensures automatic return to a defined safety position during power loss. Factory assembly and testing of the valve and actuator reduce installation time while ensuring reliable operation in commercial HVAC applications.
Key Features
- Characterized Three Way Valve Design: Provides precise flow control with equal percentage characteristics on the A-port and optimized B-port flow for stable mixing or diverting operation.
- Integrated Spring Return Actuator: Ensures automatic fail-safe positioning during power loss to protect equipment and maintain system safety.
- High Cv Performance: Cv 46 rating supports efficient flow control for medium to large hydronic circuits with minimal pressure loss.
- Wide Fluid Compatibility: Designed for chilled and hot water systems with glycol concentrations up to 60 percent.
- Modulating Control Capability: Supports 2…10 V control input with optional 4…20 mA configuration for compatibility with modern building automation systems.
- Durable Valve Construction: Nickel-plated brass body with stainless steel and PTFE components ensures long service life and low leakage performance.
- Integrated Position Feedback: Provides a 2…10 V feedback signal for continuous monitoring and closed-loop system control.
The B349+AFRB24-SR delivers the reliability and precision required for accurate hydronic flow modulation and dependable fail-safe valve control in HVAC systems.