Butterfly type
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: > Hand operated: > Of iron or steel > Of steel: > Butterfly type
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 8481.80.30.75
Stainless Steel Butterfly Valve 2-inch Wafer Style
A hand-operated stainless steel butterfly valve designed for wafer mounting between flanges in semiconductor wafer processing lines. It features a disc that rotates to control flow of gases or liquids used in crystal growth and wafer preparation equipment. Classified under HTS 8481.80.3075 as a hand-operated steel butterfly type valve for precise flow regulation in high-purity environments.
Carbon Steel Lug Type Butterfly Valve 4-inch
Hand-operated carbon steel butterfly valve with lug ends for bolting directly to flanges in semiconductor wafer slicing saw coolant systems. The butterfly disc provides tight shutoff for process water or slurries during wafer preparation. Falls under HTS 8481.80.3075 as a steel hand-operated butterfly valve used in semiconductor fabrication support.
316L Stainless Steel Flanged Butterfly Valve 6-inch
High-corrosion resistant 316L stainless steel hand-operated butterfly valve with flanged connections for use in chemical delivery systems of wafer lapping and polishing machines. The quarter-turn lever operation suits precise manual control in cleanroom environments. HTS 8481.80.3075 covers this steel butterfly type for semiconductor material processing.
Aluminum-Bodied Steel Disc Butterfly Valve 3-inch
Lightweight butterfly valve with steel disc in aluminum body, hand-lever operated for gas lines in float zone crystal growers. Provides reliable sealing for inert gases during monocrystalline semiconductor boule production. Classified as steel butterfly type under HTS 8481.80.3075 based on principal valve mechanism material.
High-Purity Steel Tri-Lobe Butterfly Valve 1.5-inch
Electropolished stainless steel butterfly valve with tri-lobe design for ultra-clean operation in wafer grinding coolant recirculation systems. Manual gear operator allows precise throttling during semiconductor wafer preparation. HTS 8481.80.3075 applies to this hand-operated steel butterfly valve for fab utilities.
Lever-Operated Steel Wafer Check Butterfly Valve 2.5-inch
Compact wafer-style steel butterfly valve with integrated check function and lever operation for preventing backflow in semiconductor crystal boule grinder coolant lines. Ensures unidirectional flow during precision grinding operations. Fits HTS 8481.80.3075 as hand-operated steel butterfly type.
Cryogenic Steel Butterfly Valve 4-inch Extended Bonnet
Steel butterfly valve with extended bonnet for cryogenic service in liquid nitrogen lines of semiconductor wafer inspection freeze systems. Hand-wheel operation maintains seal integrity at extreme low temperatures. Classified under HTS 8481.80.3075 for steel hand-operated butterfly valves.
Sanitary Steel Butterfly Valve 2-inch Tri-Clamp
Ra 15µin electropolished stainless steel butterfly valve with tri-clamp ends for clean-in-place systems in semiconductor wafer polishing slurry lines. Lever operation facilitates maintenance in sterile environments. HTS 8481.80.3075 for hand-operated sanitary steel butterfly type.
Gear-Operated Steel Double-Offset Butterfly Valve 8-inch
Heavy-duty double-offset steel butterfly valve with manual gear operator for large-diameter process gas lines in semiconductor boule production facilities. Eccentric shaft design provides bubble-tight shutoff. Classified HTS 8481.80.3075 as steel hand-operated (gear) butterfly type.
Compact Steel Micro-Butterfly Valve 1-inch
Miniature hand-operated steel butterfly valve for precise control in point-of-use gas delivery to individual wafer processing stations. Compact design fits tight cleanroom piping configurations. HTS 8481.80.3075 covers small steel butterfly valves for semiconductor utilities.