Hydraulic Pressure Regulator Valve
This automatic regulator maintains constant hydraulic pressure in industrial systems by continuously measuring and adjusting fluid pressure to a set value. It falls under HTS 9032.81.00 as a hydraulic automatic controlling instrument designed for stabilizing pressure against disturbances in hydraulic circuits. Commonly used in heavy machinery and manufacturing equipment.
Import Duty Rates by Country of Origin
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 not automatic or lacks measuring capability
Simple hydraulic valves without automatic control functions are classified under heading 8481 for taps, cocks, and valves.
If designed as a part for specific hydraulic engines or pumps
Parts principally for hydraulic power engines/pumps fall under 8412 per Chapter 90 Note 2(b), not general automatic regulators.
If classified as a general accessory rather than a complete instrument
Parts and accessories not specifically included in Chapter 90 headings default to 9033 per Chapter 90 Note 2(c).
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Import Tips & Compliance
• Verify the device qualifies as an automatic regulator by confirming it measures and adjusts pressure in real-time per Chapter 90 Note 7
• Include technical specifications and calibration certificates in documentation to avoid misclassification as simple valves (HTS 8481)
• Check for country-of-origin rules; many are made in Germany or Japan, affecting preferential duty rates
Related Products under HTS 9032.81.00
Pneumatic Air Flow Controller
An automatic pneumatic instrument that regulates airflow rates in compressed air systems by sensing and adjusting flow to maintain desired levels. Classified under HTS 9032.81.00 for pneumatic automatic controlling apparatus that stabilizes variables like flow against disturbances. Used in automation lines and HVAC systems.
Electro-Pneumatic Proportional Pressure Regulator
This hybrid regulator uses electrical signals to proportionally control pneumatic pressure, automatically maintaining setpoints via continuous measurement. It qualifies for HTS 9032.81.00 as a pneumatic automatic controller, even with electrical dependence, per Chapter 90 definitions. Ideal for precision robotics and process control.
Hydraulic Level Control Valve for Hydraulic Reservoirs
Automatically regulates hydraulic fluid levels in reservoirs by sensing and adjusting flow to maintain stable levels. Falls under HTS 9032.81.00 as a hydraulic instrument for automatic control of liquid levels per Chapter 90 Note 7(a). Used in construction equipment and presses.
Pneumatic Temperature Controller for Air Lines
Pneumatic apparatus that automatically controls air temperature in pneumatic lines by regulating flow based on temperature feedback. Classified in HTS 9032.81.00 for pneumatic automatic control of temperature variables. Applied in food processing and cleanroom environments.
Hydraulic Sequence Valve Controller
Automatic controller that sequences hydraulic valve operations by monitoring pressure and flow, ensuring proper machine cycle order. HTS 9032.81.00 covers this hydraulic automatic regulating instrument for process control. Common in injection molding machines.
Pneumatic Back Pressure Regulator
Maintains constant upstream pneumatic pressure by automatically throttling flow based on real-time measurements. Under HTS 9032.81.00 as pneumatic automatic regulator for pressure control. Used in gas delivery and testing systems.