Iron Gate Valve Body for Crystal Grinder Gas Supply
Steel gate valve body part for hand-operated control of process gases in crystal grinders that shape semiconductor boules to wafer diameters. HTS 8481.90.3000 covers iron or steel parts of such hand-operated appliances in semiconductor prep equipment. Critical for maintaining precise flat grinding tolerances.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If complete hand-operated gate valve
Assembled valves import as complete appliances under specific gate valve subheadings, not parts.
If general steel article without valve function
Plain steel castings or forgings without specific valve part design fall to other steel articles.
If integral to complete semiconductor machine
Parts of machines for semiconductor processing may classify with the complete machine heading.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Document connection to grinders via OEM specs; ensure welds meet ASME standards for pressure vessels; common pitfall is undervaluation based on weight
Related Products under HTS 8481.90.30.00
Steel Ball Valve for Semiconductor Wafer Processing
A hand-operated steel ball valve designed for controlling gas flow in crystal growers and pullers used in semiconductor boule production. It falls under HTS 8481.90.3000 as a part of iron or steel for hand-operated valves in high-purity semiconductor manufacturing equipment. Precision-engineered to handle corrosive gases without contamination.
Stainless Steel Check Valve for Wafer Slicing Saw Coolant Lines
Hand-operated check valve of stainless steel preventing backflow in coolant systems of wafer slicing saws for semiconductor boule processing. Classified under HTS 8481.90.3000 as a steel part of check appliances in precision semiconductor equipment. Ensures contamination-free operation during wafer slicing.
Steel Diaphragm Valve for Wafer Lapping Slurry Control
Hand-operated steel diaphragm valve component regulating abrasive slurry flow in wafer lappers and polishers for semiconductor surface flatness. Under HTS 8481.90.3000 as steel part of hand-operated valves in wafer preparation equipment. Prevents particle contamination during critical polishing steps.
Stainless Steel Needle Valve for Float Zone Crystal Puller
Precision steel needle valve part for fine flow control of argon gas in float zone crystal pullers producing monocrystalline semiconductor material. HTS 8481.90.3000 for iron/steel parts of hand-operated appliances in wafer manufacturing equipment. Essential for zone refining purity.
Steel Butterfly Valve Disc for Wafer Grinder Coolant
Replacement steel disc for hand-operated butterfly valves controlling coolant in wafer grinders processing semiconductor crystal boules. Classified HTS 8481.90.3000 as steel part of hand-operated valve appliances. Maintains flatness tolerances on wafers.
Iron Pressure Reducing Valve Seat for Czochralski Pullers
Steel seat insert for hand-operated pressure-reducing valves maintaining stable argon pressure in Czochralski crystal pullers for silicon wafers. HTS 8481.90.3000 covers such iron/steel parts in semiconductor growth equipment. Critical for boule uniformity.