Effectively replacing the legacy part number 9004028105

the 342970-75101 is the official manufacturer-designated supersession

While it fits standard frame sizes used in these units

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

This genuine component is the standard for maintaining reliability in Carrier

Trane VAL12000 Expansion Valve 319848-301 Effectively replacing the legacy partThe 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