Cryogenic Steel Butterfly Valve 4-inch Extended Bonnet from Canada
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.
Duty Rate — Canada → United States
15.6%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include cryogenic test data (-196°C) and material Charpy impact results
• Specify bonnet extension dimensions for pressure boundary verification
• Declare low-emission stem packing design