Nissens 999393 A/C Expansion Valve

The Nissens 999393 is a precision-engineered thermal expansion valve (TXV) designed to regulate refrigerant flow in automotive air conditioning systems. This critical component controls the amount of refrigerant released into the evaporator, separating the high-pressure and low-pressure sides of the A/C system to maintain optimal thermal performance.

Key Features:

• Block-type valve technology with proper sensing element charge for accurate set-point configuration
• Includes O-rings and mounting bolts for complete installation
• Thorough welding process to eliminate refrigerant gas leaking
• Comprehensive testing including outlet pressure, operating pressure, and leak-tightness validation
• Manufactured to OE matching standards for quality, performance, and installation fit
• Advanced design maintains required refrigerant superheat parameters for system balance

Nissens expansion valves undergo rigorous testing to ensure stable operation across the full range of refrigerant temperatures and pressures encountered during A/C cycles. The precise metering design helps prevent A/C compressor damage from slugging, lubrication issues, or overheating while ensuring proper refrigerant flow throughout the system.