Belimo B331+AFRX24-MFT-S : 3-Way 1-1/4" Characterized Control Valve (CCV), Cv Rating 25, (50 GPM @ Δ 4 psi), Stainless Steel Trim + Config. Fail-Safe Actuator, 24VACDC, Progr. (2-10VDC) Input, (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 B331 Valve Specifications
| Pattern | 3-way |
| Cv | 25 |
| End Fitting | Internal thread |
| Fluid | Chilled or hot water, up to 60% glycol |
| Body Pressure Rating | 400 psi |
| Trim | Stainless Steel |
| Valve Size | 1-1/4" |
Belimo AFRX24-MFT-S Valve Actuator Specifications
| Voltage AC/DC | AC/DC 24 V |
| Power Consumption (Running) | 7.5 W |
| Power Consumption (Holding) | 3 W |
| Power Consumption For Wire Sizing | 10 VA |
| Auxiliary Switches | 2 x SPDT |
| Control Type | MFT/Programmable |
| Manual Override | 5 mm hex crank (3/16" Allen), supplied |
| Running Time (Motor) | 150 s / 90° |
| Running Time range (Motor) | 70...220 s |
| Running Time (Fail-safe) | <20 s |
| Protection category | IP42 |
| Degree Of Protection NEMA | NEMA 2 |
| Enclosure Type | UL Enclosure Type 2 |
| Ambient Temperature | -22...122°F [-30...50°C] |
Datasheets
- Valve Pattern:
- 3-Way
- Valve Size:
- 1-1/4 Inch
- CV Rating:
- 25
- GPM:
- 50 @ Δ 4 psi
- Material:
- Stainless Steel
- Actuator Type:
- Fail-Safe
- Voltage:
- 24VAC/DC
- Control Signal:
- MFT Programmable
- Auxillary Switch:
- None
- Enclosure:
- None
