Reverse Osmosis Membrane Housing
A pressure vessel designed to hold reverse osmosis membranes in water purification systems. It is classified under HTS 8421.99.0140 as a part specifically for machinery used in filtering or purifying water through membrane separation processes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used for non-water liquids or gases
Parts for filtering machinery not exclusively for water fall under the general 'other' category.
If imported as a basic plastic tubular component without fittings
Plain plastic articles without specific filtration function are classified by material in Chapter 39.
If constructed primarily of stainless steel tubing for industrial reservoirs
Steel reservoirs or tanks not integral to filtration machinery go to Chapter 73 for metal tanks.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify compatibility with specific RO membrane sizes and pressure ratings to ensure classification as a water purification part
• Provide detailed technical specs and end-use certification to avoid misclassification as general industrial parts
Related Products under HTS 8421.99.01.40
UV Water Purifier Quartz Sleeve
A quartz glass tube that protects UV lamps while allowing light transmission for water disinfection in purification systems. Classified in HTS 8421.99.0140 as an essential part of water purifying apparatus.
Whole House Filter Manifold
Multi-port PVC manifold distributing pressurized water through parallel filter housings in whole-house systems. HTS 8421.99.0140 for water filtration machinery.
Pool Filter Multiport Valve
7-position valve controlling filter, backwash, rinse functions in sand filter pools. Dedicated water purification component, HTS 8421.99.0140.
Inline Water Filter Head Assembly
Brass head assembly with 1/4" quick connects for under-sink inline carbon filters. HTS 8421.99.0140 as water purification machinery part.
Deionization Cartridge Mounting Rack
Stainless wall-mount rack holding mixed-bed DI cartridges for lab ultrapure water systems. Specific to water purification, HTS 8421.99.0140.
Water Filter Cartridge Holder Assembly
A modular assembly that securely holds replaceable filter cartridges in residential or commercial water purification units. Falls under HTS 8421.99.0140 due to its dedicated role in water filtering machinery.