Diaphragm Metering Pump
A reciprocating pump using a flexible diaphragm to handle corrosive or abrasive liquids in precise dosing applications. Classified under HTS 8413.50.0090 as other reciprocating positive displacement pumps without measuring devices. Common in water treatment and chemical injection systems.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when equipped with integrated digital flow measurement
Addition of measuring devices reclassifies to pumps specifically designed for metering applications.
If for hand-operated diaphragm versions used in laboratories
Hand pumps, whether reciprocating or not, have dedicated classification regardless of displacement mechanism.
If sold as complete dispenser unit with metering function
Liquid dispensers with integrated pumps for precise measurement are classified as gas/liquid meters.
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Import Tips & Compliance
• Provide chemical compatibility certificates for diaphragm materials to support classification and avoid hazardous material scrutiny
• Ensure technical specs distinguish from peristaltic pumps which may fall under different subheadings
Related Products under HTS 8413.50.00.90
Hydraulic Ram Pump
A reciprocating positive displacement pump that uses water hammer effect to lift water without external power, ideal for remote water supply. It falls under HTS 8413.50.0090 as an other reciprocating pump for liquids not fitted with measuring devices or classified elsewhere. Used in agricultural and off-grid applications for reliable, low-maintenance operation.
Piston Dosing Pump
Reciprocating positive displacement pump using pistons for accurate chemical injection in industrial processes. Falls under 8413.50.0090 as other reciprocating pumps not elsewhere specified. Essential for boiler feedwater treatment and pH control systems.
Triplex Plunger Pump
High-pressure reciprocating pump with three plungers for continuous operation in pressure washing and hydroblasting. Classified in HTS 8413.50.0090 as other reciprocating positive displacement pumps. Delivers steady flow at extreme pressures up to 40,000 PSI.
Chemical Injection Pump
Small reciprocating pump for continuous low-flow chemical addition in oil & gas production. HTS 8413.50.0090 covers this as other reciprocating positive displacement pump. Corrosion-resistant construction for harsh wellhead environments.
Laboratory Syringe Pump
Precision reciprocating syringe pump for microliter flow rates in research applications. Classified HTS 8413.50.0090 as other reciprocating positive displacement pump. Essential for HPLC, microfluidics, and automated experiments.
Metering Piston Pump
Heavy-duty reciprocating piston pump for industrial metering without built-in meters. HTS 8413.50.0090 for other reciprocating positive displacement pumps. Used in pulp/paper mills and wastewater treatment.