B254+ARX24-3 2 in. 2-Way CCV with Non-Spring Return Actuator, 24 VAC/DC, Floating
Full-flow ball valve (no characterized disc) for chilled or hot water, up to 60% glycol, with on/off or floating control. Holds position on power loss.
Key Features
- Cv: 240
- Close-off: 200 psi
- Control: on/off or floating
- Running time: 90 s
Product Specifications
| Manufacturer | Belimo |
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| Model | B254ARX243 (B254+ARX24-3) |
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| Valve | B254 |
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| Valve size | 2" (50) |
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| Fluid | chilled or hot water, up to 60% glycol |
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| Fluid Temp Range (water) | 0 to 250 deg F (-18 to 120 deg C) |
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| Body Pressure Rating | 400 psi |
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| Close-off pressure | 200 psi |
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| Flow characteristic | equal percentage |
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| Leakage rate | 0% for A – AB |
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| Pipe connection | Internal thread NPT (female) |
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| Servicing | maintenance-free |
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| Flow Pattern | 2-way |
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| Controllable flow range | 75 deg |
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| Cv | 240 |
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| No Characterized Disc | TRUE |
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| Valve body | nickel-plated brass body |
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| Stem | stainless steel |
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| Stem seal | EPDM (lubricated) |
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| Seat | PTFE |
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| Characterized disc | No Disc (full flow) |
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| O-ring | EPDM (lubricated) |
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| Ball | stainless steel |
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| Suitable actuators, non-spring return | ARB(X) ARQB(X) ARB(X) N4 |
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| Suitable actuators, spring return | AFRB(X) |
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Actuator: ARX24-3
| Nominal voltage | AC/DC 24 V |
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| Nominal voltage frequency | 50/60 Hz |
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| Nominal voltage range | AC 19.2 to 28.8 V / DC 21.6 to 28.8 V |
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| Power consumption in operation | 2.5 W |
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| Power consumption in rest position | 0.5 W |
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| Transformer sizing | 5.5 VA |
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| Overload Protection | electronic thoughout 0 to 90 deg rotation |
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| Direction of motion motor | selectable with switch 0/1 |
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| Manual override | external push button |
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| Angle of rotation | 90 deg |
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| Angle of rotation note | adjustable with mechanical stop |
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| Running time (motor) | 90 s / 90 deg |
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| Running time motor variable | 90 or 150 s |
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| Sound power level motor | 45 dB(A) |
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| Position indication | Mechanical, pluggable |
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| Power source UL | Class 2 Supply |
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| Degree of protection NEMA/UL | NEMA 2 |
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| Housing | UL Enclosure Type 2 |
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| Agency Listing | cULus acc. to UL60730-1A/-2-14, CAN/CSA E60730-1:02 CE acc. to 2014/30/EU and 2014/35/EU |
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| Quality Standard | ISO 9001 |
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| UL 2043 Compliant | Suitable for use in air plenums per Section 300.22(C) of the NEC and Section 602 of the IMC |
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| Ambient humidity | Max. 95% RH, non-condensing |
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| Ambient temperature | -22 to 122 deg F (-30 to 50 deg C) |
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| Storage temperature | -40 to 176 deg F (-40 to 80 deg C) |
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| Servicing | maintenance-free |
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| Weight | 2.0 lb (0.90 kg) |
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| Housing material | Galvanized steel and plastic housing |
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| AC/DC 24 V, on/off | AC/DC 24 V, 3-point |
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