CATEngine Parts

2g0401 Expansion Valve — Cat 140G 416

This expansion valve, also known as a thermostatic expansion valve (TXV), precisely controls the flow of refrigerant into the evaporator coil of an air conditioning or refrigeration system. It operates based on temperature and pressure, ensuring efficient cooling and preventing liquid refrigerant from entering the compressor. A worn or malfunctioning valve can lead to poor cooling performance or system damage, unlike a properly functioning unit that maintains optimal system pressures and temperatures. Operators might notice inadequate cooling, frost buildup on evaporator lines, or the compressor cycling improperly when this valve fails.

Expansion Valve – Part No 2g0401 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeExpansion Valve (TXV)
MaterialBrass and copper construction
ApplicationRefrigeration/AC system
Service LifeReplace as needed, typically 5-10 years
CompatibilityCAT 2G0401
ConditionNew — OEM specification aftermarket

Failure Symptoms

An initial symptom of a failing expansion valve is inconsistent or reduced cooling performance from the air conditioning system. If the valve becomes stuck, it can lead to either insufficient refrigerant flow (poor cooling) or excessive flow (potential compressor damage). The worst consequence is the inability to maintain a safe operating temperature, potentially leading to component overheating.

Installation Tip

Carefully evacuate the refrigerant system before removing the old valve to prevent environmental contamination and personal injury. Ensure the sensing bulb is properly insulated and securely attached to the suction line after installation.

Service Note

When replacing the expansion valve, it is recommended to also replace the receiver-drier or accumulator and flush the system to remove any debris or contaminants.