Find HS Code and trade information for throttle

Throttle

A throttle is a mechanism for controlling the flow of fluid – either liquid or gas. The term most commonly refers to devices controlling the power output of an engine, but has broader applications.

Material

Throttles are constructed from a variety of materials depending on the application, including:

• Metals: Brass, aluminum, stainless steel are common for durability and precision.
• Plastics: Used in low-pressure, non-corrosive applications, often for manual controls.
• Composites: Employed in high-performance applications where weight reduction is critical.
• Elastomers (Rubber, etc.): Used in seals and diaphragms within throttle bodies.

Purpose

The primary purpose of a throttle is to regulate the amount of power or flow delivered by a system. This regulation is achieved by restricting or opening a passage, thereby controlling the pressure differential and subsequent flow rate.

Function

Throttles function by varying the size of an opening through which fluid passes. This is typically achieved via:

• Valve Control: A valve (e.g., butterfly valve, poppet valve, globe valve) physically restricts the flow path.
• Diaphragm Control: A flexible diaphragm changes the flow area in response to pressure or mechanical input.
• Flow Restriction: A fixed or variable orifice creates resistance to flow.

Usage Scenarios

• Internal Combustion Engines: In engines, the throttle controls the amount of air entering the engine, which directly affects engine power output. Foot pedals or hand levers operate the throttle.
• Fluid Power Systems: Throttles regulate flow in hydraulic and pneumatic systems for controlling actuator speed and force.
• HVAC Systems: Used to control refrigerant flow in air conditioning and heating systems.
• Chemical Processing: Control flow rates of liquids and gases in industrial processes.
• Water Systems: Regulate water flow in irrigation, plumbing, and industrial applications.

Common Types

• Butterfly Throttle: A rotating disc within a bore controls airflow. Common in gasoline engines.
• Poppet Throttle: A valve that lifts or closes to regulate flow. Often found in diesel engines and fuel injection systems.
• Globe Valve Throttle: A valve with a disc that moves perpendicular to the flow path, providing precise flow control. Used in various fluid applications.
• Diaphragm Throttle: Uses a flexible diaphragm to control flow, often in pneumatic systems.
• Electronic Throttle Control (ETC) / Drive-by-Wire: Uses an electronic sensor to detect driver input and an actuator to control the throttle plate. Common in modern vehicles.
• Cable Throttle: A mechanical cable connects the accelerator pedal to the throttle plate.
• Hydrostatic Throttle: Uses hydraulic fluid to control the throttle position, often in heavy machinery.

Based on the provided information, the following HS codes may be relevant to “throttle”:

• 8409915085: This HS code falls under Chapter 84 – Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof. Specifically, it covers Heading 8409 – Parts suitable for use solely or principally with the engines of heading 8407 or 8408. The code further specifies Subheading 8409.91 – Other parts, and is for parts suitable for spark-ignition internal combustion piston engines, intended for installation in vehicles of subheadings 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or headings 8702, 8703 or 8704. The total tax rate is 57.5%, comprised of a 2.5% base tariff, a 25.0% additional tariff, and a 30.0% additional tariff effective after April 2, 2025.

• 8409999190: This HS code also falls under Chapter 84, Heading 8409, and is categorized as “Other parts”. It is for parts suitable for use solely or principally with the engines of heading 8407 or 8408, intended for installation in vehicles of subheadings 8701.21, 8701.22, 8701.23, 8701.24 or 8701.29, or headings 8702, 8703 or 8704. The total tax rate is 57.5%, comprised of a 2.5% base tariff, a 25.0% additional tariff, and a 30.0% additional tariff effective after April 2, 2025.

It is important to note that both HS codes 8409915085 and 8409999190 are for parts intended for installation in specific vehicle types (8701.21-8701.29, 8702, 8703, or 8704). Ensure the intended application of the throttle aligns with these vehicle categories.