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Fail-safe spring return: Ensures the valve moves to a predetermined safe position upon loss of control air
and UDX series models
Standardized Compatibility: Replaces 14004905-103/U with no modifications required to existing pneumatic lines
reducing the risk of a "stuck open" drain
Carrier KR51BJ419 Fan Pulley Refrigerant Fail-safe spring return: Ensures theThe Carrier KR51BJ419 Fan Pulley is a high performance 1 groove sheave engineered for demanding commercial and residential HVAC applications. As a genuine OEM replacement part, this steel fan pulley ensures precise mechanical alignment and belt tensioning, preventing premature wear on high static blower motors. Balancing 7. 15 lbs of durable steel, the KR51BJ419 is a direct fit solution for Carrier 40RU series air handlers and rooftop units,
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