Description
The Belimo B225+LF120-S US is a 1-inch, 2-way characterized control valve with a factory-fitted 120 V spring return on/off actuator. It provides precise equal percentage flow control with a Cv of 30 and reliable fail-safe shutoff for hydronic HVAC systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
Control Valves |
| Part Number |
B225+LF120-S US |
| Subcategory |
Ball Valves |
| Valve Type |
Characterized Control Valve (CCV) |
| Valve Size |
1 in (DN 25) |
| Flow Pattern |
2-way |
| Cv Rating |
30 |
| Flow Characteristic |
Equal percentage |
| Body Pressure Rating |
600 psi |
| Close-Off Pressure |
200 psi |
| Leakage Rate |
0% for A–AB |
| Pipe Connection |
Female NPT threaded |
| Fluid Compatibility |
Chilled or hot water, up to 60% glycol |
| Fluid Temperature Range |
0…250°F (-18…120°C) |
| Controllable Flow Range |
75° |
| Actuator Type |
Spring return, on/off |
| Nominal Voltage |
AC 120 V |
| Nominal Frequency |
50/60 Hz |
| Voltage Range |
AC 96…132 V |
| Power Consumption (Running) |
5.5 W |
| Power Consumption (Rest) |
3.5 W |
| Auxiliary Switch |
1 × SPDT, adjustable |
| Running Time |
75 s / 90° |
| Fail-Safe Running Time |
<25 s |
| Degree of Protection |
IP54 / NEMA 2 |
| Weight |
Not specified |
Information About B225+LF120-S US
The B225+LF120-S US is part of Belimo’s characterized control valve portfolio designed for accurate flow regulation in hydronic heating and cooling systems. The valve incorporates a precision-machined ball that provides true equal percentage flow control, ensuring stable modulation and predictable system response. Its factory-mounted LF120-S US spring return actuator operates directly on 120 V AC power and delivers dependable on/off control with automatic fail-safe positioning during power loss. The assembly is engineered for maintenance-free operation and long service life in commercial HVAC installations.
Key Features
- Characterized Control Valve Design: Precision ball geometry delivers true equal percentage flow control for stable and repeatable system performance.
- Integrated Spring Return Actuator: Automatically drives the valve to a predefined safety position upon power loss, supporting system protection.
- Line Voltage Operation: 120 V AC actuator eliminates the need for a separate control transformer in line-voltage applications.
- Tight Shutoff Performance: Rated for 200 psi close-off pressure with zero leakage for A–AB to ensure reliable isolation.
- Durable Valve Construction: High-pressure valve body rated to 600 psi supports long-term operation in demanding hydronic systems.
- Auxiliary Switch Integration: Built-in SPDT auxiliary switch provides end-position indication and control interlocking capability.
- Maintenance-Free Assembly: Designed for continuous-duty service without routine maintenance requirements.
The B225+LF120-S US delivers the reliability and precision required for safe, dependable on/off flow control in commercial HVAC hydronic systems.
