The Trane TRR0401 is a core HVAC control circuit transformer designed to step down line voltage for reliable 24V secondary output

Reduced Operational Downtime: Pre-packaged internal components allow for a rapid "drop-in" rebuild without removing the valve body from the piping

Efficient 24VAC Coil: Designed for low power consumption and reliable pull-in voltage across standard HVAC control transformers

The additional four leads allow for auxiliary signaling or alternative wiring schemes

Effectively replacing the legacy part number 9004028105

Trane VAL12000 Expansion Valve 319848-301 The Trane TRR0401 is aThe Trane VAL12000 Expansion Valve is a critical component for maintaining precise superheat control within commercial HVAC systems. This TXV thermostatic expansion valve is engineered to regulate refrigerant flow into the evaporator coil, ensuring optimal heat exchange efficiency across varying load conditions. Featuring 1. 387 OD x 2. 125 OD connections, this valve is designed for high capacity applications that require robust OEM Trane replacement