Product classification
HS code for Diaphragm pump: 8413.50
Pumps, reciprocating positive displacement pumps, n.e.c. in heading no. 8413, for liquids.
Classification of diaphragm pump under HS 8413.50
The classification of a diaphragm pump under HS code 8413.50 is determined by its mechanical operation as a reciprocating positive displacement pump. According to the Harmonized System's General Rules of Interpretation (GRI), products are classified based on their technical characteristics and function. Heading 8413 covers pumps for liquids, whether or not fitted with a measuring device. Subheading 8413.50 specifically identifies \"other reciprocating positive displacement pumps.\" A diaphragm pump functions by the repeated back-and-forth movement of a flexible membrane (the diaphragm), which creates a volume change in the pump chamber to move fluids. This reciprocating action is the defining feature that excludes it from rotary pumps (8413.60) or centrifugal pumps (8413.70). The classification remains consistent regardless of whether the pump is driven manually, electrically, or pneumatically, provided the primary purpose is the displacement of liquid. These pumps are highly valued in industrial applications for their ability to handle viscous or abrasive fluids without the risk of leakage, as the diaphragm provides a hermetic seal between the drive mechanism and the pumped liquid.
- Covers
- Air-operated double diaphragm (AODD) pumps
- Hydraulic diaphragm pumps for high-pressure applications
- Mechanical diaphragm pumps for chemical dosing
- Solenoid-driven diaphragm metering pumps
- Hand-operated diaphragm bilge pumps
- Also under 8413.50
- Grundfos CRN series (some models)
- Milton Roy metering pumps
- LEWA diaphragm pumps
- Cat Pumps high-pressure piston pumps
- Wilden air-operated double diaphragm pumps
Codes often confused with 8413.50
Common mistake. Diaphragm pumps are frequently confused with rotary positive displacement pumps under HS code 8413.60. While both are positive displacement, rotary pumps use gears or vanes rather than a reciprocating membrane. Another common error is classifying vacuum diaphragm pumps under 8413.50; however, if the pump is designed to move air or create a vacuum rather than move liquid, it must be classified under HS code 8414.10.
Top exporters and importers of HS 841350 (the code used for diaphragm pump), 2025
In 2025, the largest exporter of HS 841350 (the code used for diaphragm pump) in UN Comtrade data was Germany, with 23% of world exports; the largest importer in UN Comtrade data was the United States, with 22% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 841350, not only diaphragm pump.
Top exporters 2025 · share of world exports
- 1 Germany $2.5B 23% of world exports
- 2 United States $2.0B 18% of world exports
- 3 China $1.4B 13% of world exports
World total: $10.8B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $2.3B 22% of world imports
- 2 China $784M 7.3% of world imports
- 3 Germany $681M 6.3% of world imports
World total: $10.8B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for diaphragm pump
Brazil splits HS 8413.50 into 2 NCM codes. Pick the one that matches your product:
- 8413.50.10Non-oxygen reciprocating pumps, over 5 to 600 HP
- 8413.50.90Other reciprocating positive displacement pumps
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about diaphragm pump
What is the HS code for Diaphragm pump?
The HS code for Diaphragm pump is 841350 (Pumps; reciprocating positive displacement pumps, n.e.c. in heading no. 8413, for liquids). The standard HS code for a diaphragm pump used for liquids is 8413.50, specifically categorized as a reciprocating positive displacement pump.
How do I classify Diaphragm pump for customs?
Diaphragm pump is classified under HS code 841350 — Pumps; reciprocating positive displacement pumps, n.e.c. in heading no. 8413, for liquids. This is a 6-digit subheading level code.
Are diaphragm pumps used for gases classified here?
No, diaphragm pumps designed for air or gas compression or vacuum generation are classified under heading 8414, typically 8414.10 for vacuum pumps or 8414.80 for air compressors.
Which countries are the top exporters of diaphragm pump (HS 841350)?
In 2025, the top exporters of HS 841350 (the code used for diaphragm pump) in UN Comtrade data were Germany ($2.5B, 23% of world exports), the United States ($2.0B) and China ($1.4B). World exports came to about $10.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of diaphragm pump (HS 841350)?
In 2025, the top importers of HS 841350 (the code used for diaphragm pump) in UN Comtrade data were the United States ($2.3B, 22% of world imports), China ($784M) and Germany ($681M). World imports came to about $10.8B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Diaphragm pump the same in all countries?
The base HS code 841350 for Diaphragm pump is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for diaphragm pump in Brazil?
Brazil splits HS 841350 into 2 NCM codes, so the right one for diaphragm pump depends on the product's details: 8413.50.10 (Non-oxygen reciprocating pumps, over 5 to 600 HP), 8413.50.90 (Other reciprocating positive displacement pumps).