Overview
The Belimo B254+AFRXUP-S N4 is a 2-inch 2-way characterized control valve combination featuring a spring-return, NEMA 4X fail-safe actuator.
Features
- Mechanical spring return delivers positive fail-safe valve positioning
- Weatherproof NEMA 4X housing for outdoor and washdown environments
- Dual SPDT auxiliary switches for remote position status indication
- High flow capacity of Cv 240 for large hydronic pipe systems
Specifications
- Valve Type: 2-way Characterized Control Valve (CCV)
- Valve Size: 2″
- Flow Capacity: Cv 240
- Actuator Type: Spring return
- Voltage: AC 24…240 V / DC 24…125 V
- Auxiliary Switches: 2 x SPDT
- Protection Rating: NEMA 4X
Applications
- Fail-safe water flow modulation in outdoor or wet HVAC environments
- High-capacity chilled water, hot water, and condenser water control



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