a manufacturer-approved conversion kit involving different springs and orifices is required

or a failing gas valve-solenoid

and P501-8504

While primarily used in Armstrong and AirEase units

this globe-style valve utilizes a modulating plug to maintain a linear flow relationship

Trane VAL9580 Expansion Valve 318423-701 a manufacturer-approved conversion kit involvingEnsure your 6 ton cooling systems maintain peak efficiency with the Trane VAL9580 Expansion Valve. This OEM thermal expansion valve (TXV) is engineered specifically for R410A refrigerant applications, providing the precise metering necessary to optimize evaporator performance and protect the compressor. As a veteran grade HVAC replacement part, the VAL9580 serves as a direct substitute for the VAL09580, featuring 1 2" inlet and 5 8" outlet sweat