Description
The Belimo B232+AFRB24-SR is a 1-1/4 inch, 2-way characterized ball control valve with an integrated 24 V spring return modulating actuator. It provides precise equal percentage flow control with a Cv of 37 and reliable close-off performance up to 200 psi for hydronic HVAC applications.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
Control Valves |
| Part Number |
B232+AFRB24-SR |
| Subcategory |
Ball Valves |
| Valve Type |
Characterized Control Ball Valve (CCV) |
| Valve Size |
1-1/4 in (DN 32) |
| Flow Pattern |
2-way |
| Cv Rating |
37 |
| Flow Characteristic |
Equal percentage |
| Body Pressure Rating |
400 psi |
| Close-Off Pressure |
200 psi |
| Leakage Rate |
0% for A–AB |
| Pipe Connection |
Female NPT threaded |
| Trim Material |
Stainless steel |
| Fluid Compatibility |
Chilled or hot water, up to 60% glycol |
| Fluid Temperature Range |
0…250°F (-18…120°C) |
| Actuator Type |
Spring return, modulating |
| Control Signal |
2…10 VDC (4…20 mA with resistor) |
| Nominal Voltage |
AC/DC 24 V, 50/60 Hz |
| Power Consumption (Running) |
5.5 W |
| Electrical Connection |
18 GA appliance cable, 1 m, 1/2" NPT conduit |
| Degree of Protection |
IP54 / NEMA 2 |
| Weight |
7.5 lbs |
Information About B232+AFRB24-SR
The B232+AFRB24-SR is part of Belimo’s characterized control valve series designed to deliver stable and accurate flow modulation in hydronic control systems. The valve features a precision-machined ball with equal percentage characteristics and stainless steel trim to ensure durability and consistent performance under varying load conditions. Its factory-mounted spring return actuator operates on AC/DC 24 V and supports modulating control with selectable direction of rotation and integrated position feedback. Built for maintenance-free service, the assembly combines tight shutoff, reliable fail-safe operation, and compatibility with modern building automation systems.
Key Features
- Characterized Ball Valve Design: Precision-engineered ball and seat provide true equal percentage flow control for accurate modulation.
- Integrated Spring Return Actuator: Automatically drives the valve to a predefined fail-safe position upon power loss for system protection.
- Modulating Control Capability: Supports 2…10 VDC control signals with optional 4…20 mA input using an external resistor.
- High Pressure and Tight Shutoff Performance: Rated for 400 psi body pressure with 200 psi close-off and zero leakage for A–AB.
- Wide Fluid and Temperature Compatibility: Designed for chilled and hot water systems with glycol concentrations up to 60%.
- Pre-Wired Electrical Connection: Supplied with 18 GA appliance cable and 1/2" NPT conduit connector for simplified installation.
- Durable Actuator Protection: IP54 and NEMA 2 ratings protect internal components in typical HVAC mechanical environments.
The B232+AFRB24-SR delivers the reliability and precision required for accurate hydronic flow modulation and fail-safe control in commercial HVAC systems.
