Bryant 1638 Thermostatic Expansion Valve
The Bryant 1638 TXV automatically adjusts refrigerant superheat in air conditioning evaporator circuits for precise temperature and humidity control. Recognized under HTS 8415.90.80 as a temperature-regulating element of fan-driven AC systems.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If check valves without temperature sensing
Non-automatic pressure-reducing valves in general valve headings.
If designated specifically as compressor control valves
Statistical suffixes distinguish compressor vs general AC parts.
If electronic expansion valves with PLC integration
Digital controls become automatic instruments under Chapter 90.
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Import Tips & Compliance
• Calibrate and certify TXV tonnage ratings matching specific evaporator capacities
• Include bulb charge type (internal/external equalizer) in technical descriptions
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