Other
Automatic regulating or controlling instruments and apparatus; parts and accessories thereof: > Other instruments and apparatus: > Hydraulic and pneumatic > Other
Duty Rate (from China)
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
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 9032.81.00.80
Hydraulic Level Regulator for Fluid Tanks
This device automatically controls liquid levels in hydraulic tanks by measuring actual levels and adjusting inlet/outlet flows to stabilize at desired setpoints. It qualifies under HTS 9032.81.00.80 as other hydraulic automatic regulating apparatus for industrial fluid management. Excludes technical machine articles per chapter exclusions.
Hydraulic Sequence Valve Controller
Controls hydraulic circuit sequencing by automatically regulating valve timing based on pressure signals for multi-actuator systems. Under HTS 9032.81.00.80 for hydraulic automatic apparatus sequencing flow variables.
Pneumatic Cylinder Position Regulator
Automatically regulates pneumatic cylinder positions by controlling air supply based on linear feedback sensors. HTS 9032.81.00.80 for pneumatic position control apparatus maintaining setpoints.
Hydraulic Relief Valve Automatic Controller
Enhances relief valves with automatic setpoint adjustment based on system demand measurements. 9032.81.00.80 for hydraulic pressure relief regulation.
Pneumatic Differential Pressure Regulator
Maintains constant differential pressure across filters/orifices by automatic flow modulation. 9032.81.00.80 pneumatic application.
Hydraulic Accumulator Charging Regulator
Automatically controls charging rates to hydraulic accumulators based on bladder pressure feedback.
Pneumatic Vacuum Regulator
Maintains consistent vacuum levels in pneumatic pickup systems automatically.
Hydraulic Servo Pressure Controller
High-precision servo control for hydraulic actuators with closed-loop pressure regulation.
Pneumatic Cascade Pressure Regulator
Multi-stage automatic pressure reduction for high-to-low pneumatic systems.
Hydraulic Flow Compensator Regulator
Compensates flow variations automatically for consistent actuator speeds.
Hydraulic Pressure Regulator for Industrial Machinery
This hydraulic pressure regulator automatically maintains constant pressure in hydraulic systems by continuously measuring and adjusting fluid flow in response to pressure variations. It falls under HTS 9032.81.00.80 as a hydraulic automatic regulating instrument designed for industrial applications, excluding those for measuring devices in pumps. Compliant with chapter notes for automatic control of hydraulic variables.
Pneumatic Flow Control Valve for Air Systems
An automatic pneumatic flow controller that regulates air flow rates in pneumatic systems by sensing and adjusting to maintain set parameters against disturbances. Classified in HTS 9032.81.00.80 for other pneumatic automatic regulating apparatus, distinct from electrical or simple valves. Meets criteria for automatic control of pneumatic variables as per chapter definitions.
Pneumatic Temperature Controller for Air Lines
Automatic regulator maintaining air temperature in pneumatic lines by measuring and modulating flow/heat exchange to counteract variations. Falls under HTS 9032.81.00.80 for pneumatic automatic apparatus controlling temperature via pneumatic means. Adheres to chapter note for non-electrical automatic control.
Hydraulic Proportional Valve Controller
This controller automatically adjusts hydraulic proportional valves based on real-time pressure/flow feedback for precise system control. HTS 9032.81.00.80 covers such other hydraulic regulators ensuring stability against disturbances. Not for machine technical uses excluded in notes.
Pneumatic Backpressure Regulator
Automatically maintains upstream pneumatic pressure by throttling flow based on continuous sensing, stabilizing against load changes. Classified HTS 9032.81.00.80 as other pneumatic automatic instrument for pressure control in gas systems.