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SITCSection 7
U.S. imports of parts & regulators for hydraulic turbines and water wheels (SITC 71819) totaled $4.3M in April 2026, traded with 23 countries.
Importers of Parts & Regulators for Hydraulic Turbines and Water Wheels paid $552K in duties in April 2026 — an effective duty rate of 25% on $2.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Parts & Regulators for Hydraulic Turbines and Water Wheels imports of $4.3M in April 2026 ran 31% below the year-to-date monthly average of $6.2M.
Last updated: April 2026 dataGovernors, speed regulators, runner blades, guide vanes, draft tubes, and other dedicated components for hydraulic turbines and water wheels are grouped here, including the control systems that maintain turbine speed under varying load. Regulators are explicitly named in the heading description, reflecting their commercial importance in grid-connected hydropower where frequency stability depends on precise turbine governing. Replacement parts for aging hydropower infrastructure represent a steady import stream distinct from new-unit procurement.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The SITC heading explicitly includes regulators (governors) as parts of hydraulic turbines and water wheels, so purpose-built hydraulic turbine governors are properly classified here rather than under instrument or control-equipment headings. The key is that the governor must be designed for use with hydraulic turbines; general-purpose industrial governors may classify differently.
Importers should provide the OEM part number, a technical drawing or datasheet confirming the blade is designed for hydraulic turbine use, and the turbine model it serves. If the blades are custom-cast to a specific runner geometry, a mill certificate or material specification may also be requested to confirm composition and support valuation.
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Monthly import values over time