Description
The Belimo B224VS+NMB24-3-X1 is a factory-assembled 2-way ball valve with a non-spring return actuator designed for reliable floating control in HVAC hydronic systems. Operating on 24 VAC/DC power, it provides accurate flow regulation with high Cv capacity for larger piping applications.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Belimo |
| Category |
Control Valves |
| Part Number |
B224VS+NMB24-3-X1 |
| Subcategory |
Ball Valves |
| Valve Type |
Ball Valve (VS) |
| Valve Size |
1 in (DN 25) |
| Flow Pattern |
2-way |
| Flow Coefficient |
Cv 43 |
| Flow Characteristic |
Modified equal percentage |
| Controllable Flow Range |
90° rotation |
| Leakage Rate |
ANSI Class VI |
| Body Pressure Rating |
600 psig WOG |
| Close-Off Pressure |
600 psi |
| Max Differential Pressure (Steam) |
35 psi |
| Fluid Compatibility |
Chilled water, hot water, up to 60% glycol, steam |
| Fluid Temperature Range (Water) |
-22…280°F (-30…138°C) |
| Pipe Connection |
NPT female |
| Valve Body Material |
Bronze B584-C84400 |
| Ball Material |
316 Stainless Steel |
| Stem Material |
316 Stainless Steel |
| Seat Material |
RPTFE |
| Actuator Type |
Non spring return |
| Control Type |
Floating point |
| Nominal Voltage |
AC/DC 24 V |
| Power Consumption (Operation) |
2 W |
| Power Consumption (Rest) |
0.2 W |
| Transformer Sizing |
4 VA |
| Angle of Rotation |
Max. 95°, adjustable |
| Running Time |
95 s / 90° |
| Protection Rating |
IP54, NEMA 2 |
| Weight |
3.7 lb |
Information About B224VS+NMB24-3-X1
The B224VS+NMB24-3-X1 is part of Belimo’s VS series ball valve assemblies engineered for high-capacity flow control in commercial HVAC systems. The bronze valve body combined with stainless steel internal components provides durability, corrosion resistance, and stable performance under high pressure conditions. Factory-fitted with the NMB24 non-fail-safe actuator, the assembly supports floating point control for accurate open/close positioning without spring return action. This configuration is commonly used in hydronic heating and cooling circuits where proportional positioning and tight shutoff are required.
Key Features
- High Cv 43 Flow Capacity: Supports efficient flow control in 1-inch piping systems while maintaining predictable pressure drop characteristics.
- Integrated Valve and Actuator Assembly: Factory-mounted configuration ensures proper alignment, reduced installation time, and consistent operational performance.
- Non Spring Return Actuation: Designed for applications where continuous powered positioning is preferred over fail-safe spring return operation.
- Floating Point Control Logic: Enables precise incremental positioning using open/close control signals from building automation systems.
- ANSI Class VI Tight Shutoff: Provides minimal leakage to support accurate isolation and improved energy efficiency.
- Durable Valve Construction: Bronze body with stainless steel ball and stem, combined with PTFE-based seals, supports long service life.
- Manual Override Capability: External push button allows manual positioning during commissioning or maintenance activities.
The B224VS+NMB24-3-X1 delivers the reliability and precision required for controlled hydronic flow regulation in commercial HVAC heating and cooling applications.
