Nissens 999311 Air Conditioning Expansion Valve

The Nissens 999311 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, maintaining optimal superheat conditions for maximum cooling performance and system efficiency.

Key Features:

• Block-type valve technology with thorough welding process to eliminate gas leaking
• Comprehensive testing and validation for pressure performance, tightness, opening, and set-point setting
• Includes O-rings and mounting bolts for complete installation
• Outlet pressure tested and operating pressure tested to ensure reliable performance
• Manufactured to OE matching quality standards with precise inner finish
• Designed to maintain proper refrigerant parameters and AC system thermal balance

Nissens expansion valves are manufactured with over 100 years of thermal system expertise, ensuring safe operation and extended component life. The valve separates the high-pressure and low-pressure sides of the AC loop while contributing to proper compressor lubrication by ensuring sufficient refrigerant flow throughout the system.