Armstrong A4AC6 Service Valve Assembly from China
The Armstrong A4AC6 service valve assembly allows refrigerant charging, evacuation, and pressure testing on air conditioning condensing units while maintaining system integrity. Classified under HTS 8415.90.80 as access fittings for temperature/humidity control elements.
Duty Rate — China → United States
18.9%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Import Tips
• Schrader vs flare connections require specific torque specs documentation
• Pressure/temperature ratings must match system design pressures (700psi+)
• Cap seals and o-ring materials affect leak rate certifications