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Belimo B254+AFRB24-S Characterized Control Valve with Fail-Safe Actuator
Part #:
B254+AFRB24-S
Manufactured by:
Belimo
- Regular price
- $1,155.00
- Sale price
- $1,155.00
- Regular price
-
1 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
The Belimo B254+AFRB24-S is a 2-way Characterized Control Valve assembly with an integrated spring-return actuator for HVA...
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Product Description P/N: B254+AFRB24-S
Description / Specifications
Description
Belimo B254+AFRB24-S is a pre-assembled 2-way Characterized Control Valve with a spring-return fail-safe actuator for hydronic HVAC applications. The assembly combines a 2-inch valve with 24VAC/DC On/Off actuation, providing reliable flow control for heating and cooling water systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Valves |
| Part Number | B254+AFRB24-S |
| Subcategory | Control Valve |
| Product Type | Characterized Control Valve with Actuator |
| Valve Model | B254 |
| Actuator Model | AFRB24-S |
| Valve Configuration | 2-Way |
| Valve Size | 2 in (DN50) |
| Flow Coefficient (Cv) | 240 |
| End Connection | Internal Thread |
| Fluid | Chilled or Hot Water, Up to 60% Glycol |
| Body Pressure Rating | 400 psi |
| Trim | Stainless Steel |
| Supply Voltage | 24VAC/DC |
| Control Type | On/Off |
| Actuator Type | Spring Return / Fail-Safe |
| Torque | 180 in-lb (20Nm) |
| Auxiliary Switches | 2 × SPDT |
| Auxiliary Switch Rating | 3A at 250V |
| Power Consumption – Running | 5W |
| Power Consumption – Holding | 2.5W |
| Transformer Sizing | 7.5VA |
| Motor Running Time | 75 Seconds / 90° |
| Fail-Safe Running Time | <20 Seconds |
| Manual Override | 5 mm Hex Crank (3/16 in Allen) |
| Protection Rating | IP42 |
| NEMA Rating | NEMA 2 |
| Enclosure Type | UL Enclosure Type 2 |
| Ambient Temperature | -22°F to 122°F (-30°C to 50°C) |
| Weight | 11.0 lbs |
Information About B254+AFRB24-S
Key Features:
- Characterized Flow Control: Provides an equal-percentage flow characteristic for stable hydronic system regulation.
- 2-Way Valve Design: Configured for two-way heating and cooling water applications.
- Spring-Return Fail-Safe: Mechanically returns the valve to its safety position during power loss.
- On/Off Control: Provides straightforward valve positioning for compatible HVAC control systems.
- Dual Auxiliary Switches: Includes two SPDT switches for position indication and auxiliary control functions.
- High-Torque Actuation: Delivers 180 in-lb (20Nm) of torque for dependable valve positioning.
- Manual Override: Supplied with a hex crank for manual actuator positioning.
- Hydronic HVAC Application: Suitable for chilled water, hot water, and glycol mixtures in building systems.
The B254+AFRB24-S delivers reliable flow control and spring-return fail-safe functionality for commercial hydronic HVAC applications.
Description / Specifications
Description
Belimo B254+AFRB24-S is a pre-assembled 2-way Characterized Control Valve with a spring-return fail-safe actuator for hydronic HVAC applications. The assembly combines a 2-inch valve with 24VAC/DC On/Off actuation, providing reliable flow control for heating and cooling water systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Belimo |
| Category | Valves |
| Part Number | B254+AFRB24-S |
| Subcategory | Control Valve |
| Product Type | Characterized Control Valve with Actuator |
| Valve Model | B254 |
| Actuator Model | AFRB24-S |
| Valve Configuration | 2-Way |
| Valve Size | 2 in (DN50) |
| Flow Coefficient (Cv) | 240 |
| End Connection | Internal Thread |
| Fluid | Chilled or Hot Water, Up to 60% Glycol |
| Body Pressure Rating | 400 psi |
| Trim | Stainless Steel |
| Supply Voltage | 24VAC/DC |
| Control Type | On/Off |
| Actuator Type | Spring Return / Fail-Safe |
| Torque | 180 in-lb (20Nm) |
| Auxiliary Switches | 2 × SPDT |
| Auxiliary Switch Rating | 3A at 250V |
| Power Consumption – Running | 5W |
| Power Consumption – Holding | 2.5W |
| Transformer Sizing | 7.5VA |
| Motor Running Time | 75 Seconds / 90° |
| Fail-Safe Running Time | <20 Seconds |
| Manual Override | 5 mm Hex Crank (3/16 in Allen) |
| Protection Rating | IP42 |
| NEMA Rating | NEMA 2 |
| Enclosure Type | UL Enclosure Type 2 |
| Ambient Temperature | -22°F to 122°F (-30°C to 50°C) |
| Weight | 11.0 lbs |
Information About B254+AFRB24-S
Key Features:
- Characterized Flow Control: Provides an equal-percentage flow characteristic for stable hydronic system regulation.
- 2-Way Valve Design: Configured for two-way heating and cooling water applications.
- Spring-Return Fail-Safe: Mechanically returns the valve to its safety position during power loss.
- On/Off Control: Provides straightforward valve positioning for compatible HVAC control systems.
- Dual Auxiliary Switches: Includes two SPDT switches for position indication and auxiliary control functions.
- High-Torque Actuation: Delivers 180 in-lb (20Nm) of torque for dependable valve positioning.
- Manual Override: Supplied with a hex crank for manual actuator positioning.
- Hydronic HVAC Application: Suitable for chilled water, hot water, and glycol mixtures in building systems.
The B254+AFRB24-S delivers reliable flow control and spring-return fail-safe functionality for commercial hydronic HVAC applications.