HS Code for Diaphragm pump

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.

Products Included

• 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

Common Misclassification

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.

FAQ

What is the HS code for diaphragm pump?

The standard HS code for a diaphragm pump used for liquids is 8413.50, specifically categorized as a reciprocating positive displacement pump.

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.