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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If proportional valves sold without dedicated controller
Valves lacking integrated automatic control classify separately under 8481.
If accessory parts for multiple regulator types
Non-specific controllers suitable for various headings go to 9033 per note 1(c).
If for specific hydraulic power pumps
Linear acting hydraulic motors/pumps with controls classify in 8412 per exclusions.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include hydraulic response time and proportional band specs; test reports prove automatic function
• For high-pressure (>5000 PSI), provide material stress certs to avoid safety holds
Related Products 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.