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HSChapter 84
U.S. imports of filtering or purifying machinery and apparatus for liquids (nesoi) (HS 842129) totaled $145.1M in April 2026, traded with 59 countries.
Importers of Filtering or Purifying Machinery and Apparatus for Liquids (NESOI) paid $20.6M in duties in April 2026 — an effective duty rate of 19% on $108.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Filtering or Purifying Machinery and Apparatus for Liquids (NESOI) imports of $145.1M in April 2026 ran 16% above the year-to-date monthly average of $124.8M.
Last updated: April 2026 dataA broad residual heading, 8421.29 captures liquid-filtering and purifying equipment not covered by the more specific beverage or engine-filter subheadings — including hydraulic fluid power filters rated at or above 1,000 kPa (8421290040), oil-separation equipment (8421290015), and refrigerant recovery and recycling apparatus (8421290005). Mexico and Germany lead US imports, reflecting both North American industrial supply chains and German engineering exports in hydraulic and process-filtration systems. The heading's catch-all nature means classification disputes are common; importers should document the fluid medium, operating pressure, and intended industrial application.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Under the US schedule, hydraulic fluid power filters rated at or above 1,000 kPa are classified at 8421290040, while lower-rated or general liquid-filtering apparatus not otherwise specified falls under 8421290065. Pressure ratings from the manufacturer's technical datasheet are the controlling specification.
If the system is not dedicated to beverage processing and does not qualify as a water-purification apparatus under a more specific heading, it would generally fall under 8421.29 as filtering or purifying machinery for liquids NESOI. The primary function and the nature of the liquid being processed are the key classification factors; a CBP binding ruling can provide certainty for high-value or recurring shipments.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8421290065 | FILTER OR PURIFY MACH & APPARATUS FOR LIQUID,NESOI | $123.8M | 18.87% | $17.4M |
| 8421290040 | HYDRAULIC FLUID POWER FILTERS,RATED GT/= 1000 KPA | $9.1M | 19.45% | $1.6M |
| 8421290005 | REFRIGERANT RECOVRY/RECYCL FR FILTER/PURIFY LIQUID | $8.4M | 18.61% | $1.1M |
| 8421290015 | OIL-SEPARATION EQUIP FR FILTERING/PURIFYING LIQUID | $3.9M | 23.69% | $499K |
FILTER OR PURIFY MACH & APPARATUS FOR LIQUID,NESOI
HYDRAULIC FLUID POWER FILTERS,RATED GT/= 1000 KPA
REFRIGERANT RECOVRY/RECYCL FR FILTER/PURIFY LIQUID
OIL-SEPARATION EQUIP FR FILTERING/PURIFYING LIQUID
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8421290065 | FILTER OR PURIFY MACH & APPARATUS FOR LIQUID,NESOI | $242.1M |
| 8421290040 | HYDRAULIC FLUID POWER FILTERS,RATED GT/= 1000 KPA | $19.5M |
| 8421290015 | OIL-SEPARATION EQUIP FR FILTERING/PURIFYING LIQUID | $5.9M |
| 8421290005 | REFRIGERANT RECOVRY/RECYCL FR FILTER/PURIFY LIQUID | $5.1M |
FILTER OR PURIFY MACH & APPARATUS FOR LIQUID,NESOI
6.4M no
HYDRAULIC FLUID POWER FILTERS,RATED GT/= 1000 KPA
324.8K no
OIL-SEPARATION EQUIP FR FILTERING/PURIFYING LIQUID
25.5K no
REFRIGERANT RECOVRY/RECYCL FR FILTER/PURIFY LIQUID
49.3K no
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| New Jersey | $4.7M | $90.6M | +$85.9M |
| Indiana | $9.2M | $26.6M | +$17.3M |
| Texas | $20.8M | $14.5M | -$6.3M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| JFK INTERNATIONAL AIRPORT, NY | $13.5M | $95.9M | +$82.4M |
| CHICAGO, IL | $10.7M | $23.0M | +$12.3M |
| NEW ORLEANS, LA | $5.7M | $17.2M | +$11.5M |