Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level
Taps, cocks, valves and similar appliances, for pipes, boiler shells, tanks, vats or the like, including pressure-reducing valves and thermostatically controlled valves; parts thereof: > Other appliances: > Other > Regulator valves, self-operating, for controlling variables such as temperature, pressure, flow and liquid level
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 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 8481.80.90.15
Float-Level Regulator Valve for Wafer Processing Chemical Tanks
Self-operating float valve that automatically controls liquid levels in chemical reservoirs for wafer lapping and polishing processes. HTS 8481.80.9015 applies due to its self-regulating function for liquid level control in semiconductor wafer preparation equipment. Prevents overflow and maintains consistent slurry supply.
Temperature Regulator Valve for Wafer Slicing Coolant System
Self-operating thermostatic valve controls coolant temperature during diamond wafer slicing from silicon boules. Classified HTS 8481.80.9015 for temperature regulation in semiconductor wafer preparation saw equipment. Maintains optimal cutting conditions for minimal thermal damage.
Self-Operating Pressure Valve for Wafer Grinder Coolant Feed
Maintains constant pressure in coolant lines feeding wafer back-grinders for thickness reduction. HTS 8481.80.9015 classification for pressure regulation in semiconductor wafer grinding equipment. Ensures uniform grinding across 300mm wafer surfaces.
Self-Operating Pressure Regulator Valve for Semiconductor Wafer Etching
This self-operating regulator valve automatically maintains precise pressure levels in chemical etching processes during semiconductor wafer fabrication. It falls under HTS 8481.80.9015 as a regulator valve specifically designed for controlling pressure in semiconductor manufacturing equipment. The valve responds to pressure differentials without external power, ensuring stable flow in corrosive etchants.
Thermostatic Control Valve for Crystal Grower Temperature Regulation
A self-operating thermostatic valve that regulates coolant flow to maintain exact temperatures in Czochralski crystal growers for silicon boule production. Classified under HTS 8481.80.9015 for its self-operating temperature control function in semiconductor material growth equipment. Ensures thermal stability critical for monocrystalline semiconductor purity.
Self-Operating Flow Control Valve for Wafer Grinding Coolant
Automatically regulates coolant flow rates in wafer grinding machines to achieve precise surface flatness tolerances. Falls under HTS 8481.80.9015 as a self-operating regulator for flow control in semiconductor wafer preparation equipment. Critical for maintaining consistent lubrication and heat dissipation.
Pressure Regulator Valve for Float Zone Crystal Puller
Self-operating valve maintains inert gas pressure in float zone crystal pullers for high-purity silicon production. HTS 8481.80.9015 classification for pressure control in semiconductor crystal growing equipment using float zone method. Prevents contamination during monocrystalline boule formation.
Liquid Level Control Valve for Wafer Polishing Slurry Tanks
Automatically maintains slurry levels in chemical mechanical polishing tanks for wafer surface preparation. HTS 8481.80.9015 for self-operating liquid level regulation in semiconductor wafer processing equipment. Ensures consistent polishing pressure and material removal rates.
Flow Regulator Valve for Semiconductor Wafer Rinse Station
Self-operating valve precisely controls DI water flow rates in post-etch wafer rinse stations. Falls under HTS 8481.80.9015 as flow regulator for semiconductor cleaning processes. Maintains ultra-pure water flow critical for particle-free wafer surfaces.
Thermoregulating Valve for Wafer Lapping Machine Coolant
Self-operating valve maintains lapping slurry temperature for achieving wafer flatness tolerances <1µm. Classified under HTS 8481.80.9015 for temperature control in semiconductor wafer preparation lapping equipment. Prevents thermal distortion during precision surface preparation.