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SITCSection 8
U.S. imports of instruments & apparatus for measuring or checking pressure of liquids or gases (SITC 87435) totaled $173.4M in April 2026, traded with 65 countries.
Importers of Instruments & Apparatus for Measuring or Checking Pressure of Liquids or Gases paid $14.4M in duties in April 2026 — an effective duty rate of 12% on $116.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataPressure gauges, manometers, and transducers for liquids and gases fall under this heading when they serve a measurement or checking function rather than supply metering or automatic regulation. These instruments are critical inputs for aerospace, HVAC, semiconductor fabrication, and upstream energy sectors, where calibration traceability and pressure range specifications drive procurement decisions. The N.E.S. restriction means that instruments already captured by a more specific SITC heading must be classified there instead, making pre-import classification review essential for complex multi-function devices.
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If the device's primary function is to measure or display pressure without automatically adjusting flow or system parameters, it belongs here. Instruments that both sense and regulate—such as pressure-reducing valves with integrated controls—are typically classified under regulating apparatus headings. When a device performs both functions, classification usually follows the principal function, which should be confirmed with a customs broker.
Most industrial pressure instruments enter as general merchandise without mandatory admissibility review, but importers should retain calibration certificates and technical specifications to support classification and valuation. Instruments destined for use in nuclear or defense applications may require additional export-control or end-use documentation from the country of origin.
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Monthly import values over time