The expansion valve controls the flow of refrigerant into the evaporator. Similar to the carburetor on an engine, the expansion valve prevents flooding and starving of refrigerant supply to the evaporator. The expansion valve is partially responsible for controlling the pressures within the A/C system.
- Part Number: 31-31490
- Type: Block
- Refrigerant: R-134A
- Rating:
- Coil fittings: #8 #10
- Hose fittings: #6 #10
- Special Attribute: Flange Mount
- Special Attribute: Use With 71R8991 Allen Head Mounting Bolt
Interchange Numbers:
- 3639454 Caterpillar
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