Rotary Archimedes Screw Pump
Open screw pump for wastewater sludge using Archimedes principle rotary motion. Classified HTS 8413.60.00.90 other rotary positive displacement for liquids. Slow speed prevents solids damage.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If enclosed single screw progressive cavity
True screw pumps have dedicated statistical suffix.
If primarily for water filtration/sedimentation
Water treatment filtering machinery separate.
If part of complete sewage treatment machinery
Treatment plant components classify together.
Not sure which classification is right?
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Import Tips & Compliance
• Solids handling capacity specs critical for wastewater apps
• Incline angle documentation supports screw design
• Avoid 'progressive cavity' terminology to prevent screw pump confusion
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