Laboratory Gas Manostat Regulator
Precision manostat for regulating gas pressure in analytical instruments, featuring electronic feedback to maintain constant pressure despite flow variations. Classified under HTS 9032.20.00.00 for its automatic control of gas pressure through continuous measurement and adjustment. Essential for chromatography and gas delivery systems.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If primarily a pressure gauge without control function
Instruments for measuring pressure only, lacking automatic regulating capability, go to 9026.
If for industrial machines incorporating manostats as integral parts
Per chapter note 2(b), parts principally used with specific machines classify with the machine heading.
If generic parts not specific to Chapter 90 apparatus
Residual heading for parts not suitable solely for instruments of this chapter.
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Import Tips & Compliance
• Include operating manuals showing automatic regulation mode to distinguish from manual regulators
• Label as 'automatic manostat' on commercial invoice; avoid generic 'pressure regulator' to prevent 8481 reclassification
• Check for FCC compliance if incorporating electronic controls for U.S. entry
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