Festo VPPM Proportional Pressure Control Valve
Pneumatically actuated valve designed for dynamic pressure control in wafer slicing saw coolant systems, responding proportionally to PLC signals. HTS 8481.80.9035 applies due to its semiconductor manufacturing application in maintaining precise tolerances during boule slicing. Critical for flatness control in wafer preparation equipment.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If servo-operated rather than signal-proportional
Position feedback servo valves prioritize closed-loop control over simple signal proportionality.
If with integrated flow measurement
Proportional valves incorporating measuring instruments classify as complete flow regulators in Chapter 90.
If imported as replacement parts only
Parts of proportional control valves (e.g., just the actuator) rather than complete appliances go to parts provisions.
Not sure which classification is right?
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Import Tips & Compliance
• Include ATEX or IP65 ratings documentation for cleanroom compatibility; customs often scrutinize contamination risks in semiconductor imports
• Avoid pitfall of declaring as 'general purpose' - specify wafer fabrication end-use with equipment model references in entry docs
• Calculate duties using column 1 rates; check for temporary exclusions under USTR semiconductor equipment lists
Related Products under HTS 8481.80.90.35
SMC PVQ30 Series Pneumatic Proportional Valve
A high-precision valve with pneumatic actuator for proportional pressure regulation in float zone crystal growers used for semiconductor wafer production. Classified under HTS 8481.80.9035 for its signal-responsive proportional operation in monocrystalline silicon processing. Essential for maintaining ultra-pure inert gas atmospheres during crystal pulling.
Numatics Proportional Valve G3 Series
Pneumatic actuator valve for precise slurry flow control in CMP polishers during semiconductor wafer processing. HTS 8481.80.9035 due to proportional operation by process controller signals. Essential for uniform material removal rates in wafer surface planarization.
ASCO 551 Series Proportional Solenoid Control Valve
This pneumatic actuator-equipped control valve modulates flow precisely based on electrical signals from a PLC in semiconductor wafer processing systems. It falls under HTS 8481.80.9035 due to its design for proportional operation by a control device signal, specifically for gas delivery in crystal growers. Used in Czochralski pullers to maintain stable pressure during silicon boule formation.
Burkert Type 3360 Proportional Solenoid Valve
Compact pneumatic proportional valve for DI water flow control in crystal grinders and polishers during semiconductor wafer prep. Meets HTS 8481.80.9035 criteria for signal-controlled operation in boule grinding to precise diameters. Ensures flatness tolerances critical for subsequent device fabrication.
Parker PV Series Pneumatic Proportional Valve
High-flow proportional control valve with pneumatic actuator for nitrogen purging in wafer lapping equipment. Classified HTS 8481.80.9035 for proportional signal response in semiconductor surface preparation. Maintains consistent pressure for achieving nanometer-level wafer flatness.