Nissens 999422 A/C Expansion Valve

Nissens A/C Expansion Valve for Volvo HVAC Service

The Nissens 999422 is a block-style A/C expansion valve built for precise refrigerant control in Volvo climate systems. It uses aluminum construction, is set up for R134A refrigerant, and includes O-rings for sealing at the connection points.

Compatible with select Volvo S60, S90, V60, V60 Cross Country, V90, V90 Cross Country, XC60, and XC90 applications, this part is specified to OE-matching standards for pressure performance, tightness, opening behavior, set-point calibration, and internal finish.

Key Features

• Block-type A/C expansion valve for HVAC refrigerant metering
• Aluminum construction for Volvo air conditioning service
• Configured for R134A refrigerant systems
• O-rings included for sealing at installation points
• Developed and tested to match OE-level performance targets
• Part number 999422 for direct catalog lookup

Detailed Description

Nissens 999422 is an A/C expansion valve used to regulate refrigerant flow into the evaporator, helping maintain proper system pressure and cooling performance. The valve is engineered for Volvo platforms that use the listed inlet and outlet dimensions, and it is a direct-fit service part for HVAC repair work where accurate refrigerant metering is required. This part cross-references Monroe Shocks & Struts (e.g., 31404339, 32260835) for the same application.

For buyers searching for a Volvo S60 A/C expansion valve, Volvo XC90 HVAC expansion valve, or a Nissens 999422 replacement, this component provides the fitment and construction details needed for a targeted repair. It is also a relevant match for Volvo S90, V60, V90, and XC60 climate control service where the system is specified for R134A.

Common Problems This Part Addresses

• Weak or inconsistent cabin cooling
• Incorrect refrigerant flow into the evaporator
• Pressure imbalance in the A/C circuit
• Temperature fluctuations from a worn expansion valve
• Leaks at the valve connection points when seals are degraded

Installation Notes and Tips

• Verify the inlet and outlet dimensions against the vehicle’s original valve before installation.
• Replace the O-rings during service and lubricate them with the correct refrigerant oil.
• Inspect the A/C system for contamination, moisture, or compressor debris before installing the new valve.
• Evacuate and recharge the system with the correct R134A service procedure after installation.
• Confirm the vehicle application by year, make, and model before ordering; this part is listed for 2016-2021 Volvo coverage across the models shown.

Quality Assurance

Nissens manufactures thermal expansion valves under strict testing and validation controls, including checks for pressure performance, sealing integrity, opening characteristics, set-point accuracy, and internal finish. The result is a service part built to align with OE matching standards for Volvo HVAC repair.