Belimo B253+AFRB24-S : 2-Way 2" Characterized Control Valve (CCV), Cv Rating 120, (240 GPM @ Δ 4 psi), Stainless Steel Trim + Fail-Safe Valve Actuator, 24VAC/DC, On/Off Control Signal, (2)SPDT 3A @250V Aux Switch, 5-Year Warranty
Ideal for air handling units, fan coil units, and various HVAC applications, the Belimo CCV ensures efficient heating or cooling coil regulation. Its versatility extends to Unit Ventilators, VAV box re-heat coils, and bypass loops, making it a cornerstone of hydronic systems with variable flow requirements.
Key Benefits of the Belimo Characterizing Disc:
- Equal percentage flow characteristic for precise control.
- Enhanced control stability with the characterizing disc.
- Comparable Cv values to globe valves of the same size.
- Reduced need for multiple pipe reductions.
- Prevents control loop "hunting," ensuring longevity of components and optimizing energy consumption.
Belimo B253 Valve Specifications
| Pattern | 2-way |
| Cv | 120 |
| End Fitting | Internal thread |
| Fluid | Chilled or hot water, up to 60% glycol |
| Body Pressure Rating | 400 psi |
| Trim | Stainless Steel |
| Valve Size | 2" [50] |
Actuator Specifications
| Voltage AC/DC | AC/DC 24 "V |
| Power Consumption (Running) | 5 W |
| Power Consumption (Holding) | 2.5 W |
| Power Consumption For Wire Sizing | 7.5 VA |
| Auxiliary Switches | 2 x SPDT |
| Torque | 180 in-lb [20 Nm] |
| Control Type | On/Off |
| Direction Of Motion Motor | selectable by ccw/cw mounting |
| Direction of Rotation (Fail-Safe) | Reversible with cw/ccw mounting |
| Manual Override | 5 mm hex crank (3/16" Allen), supplied |
| Angle of Rotation | 95 |
| Running Time (Motor) | 75 s / 90° |
| Running Time (Fail-safe) | <20 s |
| Protection category | IP42 |
| Degree Of Protection NEMA | NEMA 2 |
| Enclosure Type | UL Enclosure Type 2 |
| Ambient Temeprature | -22...122°F [-30...50°C] |
Datasheets
- Valve Pattern:
- 2-Way
- Valve Size:
- 2 Inch
- CV Rating:
- 120
- GPM:
- 240 @ Δ 4 psi
- Material:
- Stainless Steel
- Actuator Type:
- Fail-Safe
- Voltage:
- 24VAC/DC
- Control Signal:
- On/Off
- Auxillary Switch:
- None
- Enclosure:
- None
