HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
---|---|---|---|---|---|
8419899540 | Doc | 59.2% | CN | US | 2025-05-12 |
8419819080 | Doc | 37.5% | CN | US | 2025-05-12 |
8487900080 | Doc | 83.9% | CN | US | 2025-05-12 |
8487900040 | Doc | 58.9% | CN | US | 2025-05-12 |
7323997000 | Doc | 60.3% | CN | US | 2025-05-12 |
7323993000 | Doc | 63.2% | CN | US | 2025-05-12 |
7326908688 | Doc | 82.9% | CN | US | 2025-05-12 |
Coolant Pot
A coolant pot, also known as an expansion tank or overflow tank, is a component within a liquid cooling system designed to accommodate changes in coolant volume due to temperature fluctuations.
Material:
- Plastic: Commonly made from high-density polyethylene (HDPE) or polypropylene due to their resistance to coolant chemicals and heat. Often translucent to allow visual coolant level checks.
- Metal: Aluminum is used in performance applications, offering superior heat dissipation and durability. Stainless steel is also employed, particularly in custom loop systems.
Purpose:
The primary function of a coolant pot is to prevent pressure buildup or vacuum formation within the cooling system as the coolant heats and cools. Coolant expands when heated and contracts when cooled. Without a pot, this expansion/contraction could lead to leaks, hose bursts, or cavitation (formation of vapor bubbles) which reduces cooling efficiency.
Function:
- Expansion: As coolant temperature rises, it expands. The pot provides a reservoir for this excess volume, preventing increased pressure within the radiator, hoses, and pump.
- Contraction: As the coolant cools, it contracts. The pot provides a source of coolant to replace the lost volume, preventing a vacuum from forming.
- Air Bleeding: Many pots are designed to allow air bubbles to escape from the system, improving cooling performance and preventing airlocks.
- Coolant Level Monitoring: Translucent pots allow for visual inspection of the coolant level, indicating potential leaks or system issues.
Usage Scenarios:
- Automotive Cooling Systems: Standard component in internal combustion engine cooling systems (radiators).
- Computer Liquid Cooling: Used in custom loops and all-in-one (AIO) coolers to manage coolant volume and maintain optimal performance.
- Industrial Machinery: Employed in cooling systems for various industrial equipment.
- Motorcycle Cooling: Found in liquid-cooled motorcycles to regulate engine temperature.
Common Types:
- Pressurized Expansion Tanks: Sealed tanks designed to withstand significant pressure, common in automotive applications. Often include pressure caps with specific pressure ratings.
- Non-Pressurized Overflow Tanks: Simpler tanks that vent excess coolant to the atmosphere or a recovery bottle. Common in some custom computer loops.
- All-in-One (AIO) Coolant Reservoirs: Integrated reservoirs found within AIO CPU coolers. Typically smaller in capacity.
- Custom Loop Reservoirs: Available in a wide variety of shapes, sizes, and materials for custom PC liquid cooling setups. Often include features like integrated pumps, fans, and lighting.
- Remote Reservoirs: Separate reservoirs connected to the main cooling loop via tubing, providing additional coolant capacity and flexibility.
Based on the provided information, a “coolant pot” can be interpreted as equipment used for cooling materials, potentially involving a change of temperature. Here's a breakdown of relevant HS codes:
- 8419899540: This code covers machinery, plant, or laboratory equipment for the treatment of materials by a process involving a change of temperature (including cooling), other than domestic purposes. It specifically refers to “Other machinery, plant or equipment: Other: Designed for cooling: Other”. This is a strong candidate if the pot is part of a larger cooling system or industrial process. The total tax rate is 59.2% (4.2% base tariff, 25.0% additional tariff, and 30% additional tariff after April 2, 2025).
- 8419819080: This code also covers machinery for temperature-related material treatment, but is specifically for equipment “For making hot drinks or for cooking or heating food: Other Other”. While not a direct fit, if the coolant pot has a secondary function related to food preparation, this could be considered. The total tax rate is 37.5% (0.0% base tariff, 7.5% additional tariff, and 30% additional tariff after April 2, 2025).
- 7323997000: This code covers table, kitchen or other household articles and parts thereof, of iron or steel, specifically “Other: Other: Not coated or plated with precious metal: Other: Cookingware”. If the coolant pot is a simple cooking pot made of iron or steel and used for household purposes, this code might apply. The total tax rate is 60.3% (5.3% base tariff, 0.0% additional tariff, and 30% additional tariff after April 2, 2025, plus a 25% additional tariff for steel products).
- 7326908688: This code covers other articles of iron or steel, specifically “Other: Other: Other: Other Other”. This is a broad category and could apply if the coolant pot doesn't fit neatly into other classifications. The total tax rate is 82.9% (2.9% base tariff, 25.0% additional tariff, and 30% additional tariff after April 2, 2025, plus a 25% additional tariff for steel products).
Regarding HS code 7323997000 and 7326908688, please note the 25% additional tariff applies to steel products.
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