Nissens 999991 A/C Expansion Valve

Overview

This Nissens A/C expansion valve is built for HVAC systems that use R134 refrigerant and a block-style valve design. It is a direct-fit service part for the specified application and is engineered to OE-matching standards for pressure control, sealing, opening behavior, and internal finish.

Key Features

• Aluminum construction for the valve body
• Block-style A/C expansion valve design
• Configured for R134 refrigerant systems
• O-rings included for sealing at installation
• Mounting hardware included where applicable
• Validated for pressure performance, tightness, and set-point accuracy

Product Details

Built by Nissens, part number 999991 is a thermal expansion valve intended to regulate refrigerant flow through the air conditioning system. The valve is manufactured to precise OE-matching standards and undergoes testing for pressure performance, leak tightness, opening characteristics, set-point setting, and inner finish. For Honda Accord HVAC repair, this part number 999991 provides a service replacement that aligns with the original system requirements.

Nissens focuses on controlled manufacturing and validation across its expansion valve range, which helps maintain consistent refrigerant metering in the A/C circuit. This makes the 999991 a practical choice when replacing a worn or leaking valve in a Honda Accord equipped for R134 refrigerant.

Common Issues This Part Can Address

• Inconsistent refrigerant metering through the A/C system
• Loss of cooling performance caused by a worn expansion valve
• Refrigerant leakage at the valve sealing surfaces
• Improper opening or closing behavior in the HVAC circuit
• Service replacement needs for a Honda Accord A/C repair

Installation Notes

Fits 2018-2022 Honda Accord, N/A. Confirm refrigerant type, valve style, and system configuration before installation. Replace the O-rings during service and follow the vehicle manufacturer’s A/C evacuation, recharge, and leak-check procedures after installation. Part number 999991 should be matched to the original application before assembly.

Quality Assurance

Nissens tests these expansion valves for pressure performance, tightness, opening characteristics, set-point accuracy, and internal finish to OE-matching standards. This part cross-references Honda (e.g., 80220TVAA01) for the same application.