Deaerator for Boiler Feedwater from Japan
Vessel that removes dissolved oxygen from feedwater to prevent boiler corrosion, using steam scrubbing. Functions as auxiliary plant under HTS 8404.10.00 when integrated with 8402/8403 boiler systems. Tray or spray-type designs for high-capacity plants.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Document oxygen removal efficiency curves (typically <7 ppb)
• Include vent condenser details if integral to the deaerator assembly
• Classify as water treatment only if not boiler-feed specific; link to steam cycle