B253+ARX24-3-T N4 | Belimo Characterized Control Valve 2 Inch Cv 120 24VACDC Floating NEMA 4X
Belimo · Valves & Process Control
Description The Belimo B253+ARX24-3-T N4 is a factory-assembled 2-way characterized control valve designed for precise floating control in hydronic HVAC systems. Featuring a non-spring return actuator with NEMA 4X protection, it supports reliable operation in demanding indoor and outdoor environments. Technical Specifications Condition New/Never Used Surplus Brand Belimo Category Control Valves Part Number B253+ARX24-3-T N4 Subcategory Characterized Control Valves Valve Type Characterized Control Valve (CCV) Valve Size 2 in (DN 50) Flow Pattern 2-way Flow Coefficient Cv 120 Flow Characteristic Equal percentage Controllable Flow Range 75° Leakage Rate 0% for A–AB Body Pressure Rating 400 psi Close-Off Pressure 200 psi Fluid Compatibility Chilled water, hot water, up to 60% glycol Fluid Temperature Range 0…250°F (-18…120°C) Pipe Connection NPT female Valve Body Material Nickel-plated brass Ball Material Stainless steel Stem Material Stainless steel Seat Material PTFE Actuator Type Non spring return Control Type Floating point Nominal Voltage AC/DC 24 V Power Consumption (Operation) 2.5 W Power Consumption (Rest) 0.5 W Transformer Sizing 5.5 VA Electrical Connection Terminal blocks Angle of Rotation 90°, adjustable Running Time 90 s / 90° (selectable 90 or 150 s) Protection Rating IP66/67, NEMA 4X Weight 7.4 lb Information About B253+ARX24-3-T N4 The B253+ARX24-3-T N4 is part of Belimo’s high-capacity CCV platform engineered for stable and energy-efficient hydronic control. Its characterized valve design delivers a predictable equal percentage response, improving control accuracy across varying load conditions. The nickel-plated brass body and stainless steel internals provide durability and corrosion resistance for long-term service. Factory-fitted with the ARX24 actuator in a NEMA 4X enclosure, this assembly supports reliable floating control in harsh or washdown-prone environments. Key Features High Cv 120 Flow Capacity: Supports efficient control of large hydronic flows in 2-inch piping with stable pressure characteristics. Characterized Control Valve Geometry: Equal percentage response improves controllability and system stability over a wide operating range. Integrated Valve and Actuator Assembly: Factory mounting ensures precise alignment, reduced installation time, and consistent performance. Floating Point Control Operation: Enables accurate incremental positioning using open/close signals from building automation systems. Non Spring Return Actuation: Designed for continuous powered positioning where fail-safe spring action is not required. NEMA 4X / IP66-67 Protection: Sealed actuator housing supports outdoor installation and resistance to moisture, dust, and washdown. Manual Override Under Cover: Allows controlled manual positioning during commissioning or maintenance without electrical power. The B253+ARX24-3-T N4 delivers the reliability and precision required for high-capacity floating control in commercial HVAC hydronic systems.
Brand: Belimo · Category: Valves & Process Control
Key features
- High Cv 120 Flow Capacity: Supports efficient control of large hydronic flows in 2-inch piping with stable pressure characteristics.
- Characterized Control Valve Geometry: Equal percentage response improves controllability and system stability over a wide operating range.
- Integrated Valve and Actuator Assembly: Factory mounting ensures precise alignment, reduced installation time, and consistent performance.
- Floating Point Control Operation: Enables accurate incremental positioning using open/close signals from building automation systems.
- Non Spring Return Actuation: Designed for continuous powered positioning where fail-safe spring action is not required.
- NEMA 4X / IP66-67 Protection: Sealed actuator housing supports outdoor installation and resistance to moisture, dust, and washdown.
- Manual Override Under Cover: Allows controlled manual positioning during commissioning or maintenance without electrical power.
Specifications
| Manufacturer part number | B253+ARX24-3-T N4 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Control Valves |
| Part Number | B253+ARX24-3-T N4 |
| Subcategory | Characterized Control Valves |
| Valve Type | Characterized Control Valve (CCV) |
| Valve Size | 2 in (DN 50) |
| Flow Pattern | 2-way |
| Flow Coefficient | Cv 120 |
| Flow Characteristic | Equal percentage |
| Controllable Flow Range | 75° |
| Leakage Rate | 0% for A–AB |
| Body Pressure Rating | 400 psi |
| Close-Off Pressure | 200 psi |
| Fluid Compatibility | Chilled water, hot water, up to 60% glycol |
| Fluid Temperature Range | 0…250°F (-18…120°C) |
| Pipe Connection | NPT female |
| Valve Body Material | Nickel-plated brass |
| Ball Material | Stainless steel |
| Stem Material | Stainless steel |
| Seat Material | PTFE |
| Actuator Type | Non spring return |
| Control Type | Floating point |
| Nominal Voltage | AC/DC 24 V |
| Power Consumption (Operation) | 2.5 W |
| Power Consumption (Rest) | 0.5 W |
| Transformer Sizing | 5.5 VA |
| Electrical Connection | Terminal blocks |
| Angle of Rotation | 90°, adjustable |
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