Mei 1634 Block Type A/C Expansion Valve for Freightliner Cascadia

The Mei 1634 is a block-type thermostatic expansion valve (TXV) designed specifically for Freightliner Cascadia truck air conditioning systems. This expansion valve is located at the evaporator inlet and controls the flow of refrigerant entering the evaporator based on the cooling load or the evaporator's temperature.

Key Specifications:

• 1.5 ton cooling capacity rating
• Compatible with both R12 and R134a refrigerants
• Block-type mounting with flange mount design
• Hose inlet size: #8, Hose outlet size: #12
• Evaporator inlet size: #8, Evaporator outlet size: #12
• Includes mounting bolts and sealing washers

OEM Cross References:

• Freightliner VCC: T1000898P, T1000044L
• Truck Air: 12-0627A

This expansion valve uses O-Ring #0131 and O-Ring #0142 with sealing washer type construction for reliable, leak-free operation. The block-type design provides a compact, integrated solution for regulating refrigerant flow in heavy-duty truck HVAC systems, ensuring optimal cooling performance and system efficiency.