Information for ruling 600013367
This section is Advance Tariff Ruling
- Start date
- 07 Jul 2025
- Expiry date
- 06 Jul 2028
- Commodity code
- 8421999099 (opens in new tab)
- Description
- Oil Separator are used in commercial refrigeration systems such as supermarket refrigeration packs. In most refrigeration systems, during compression of refrigerant gas oil is required to lubricate the moving parts within the compressor to prevent overheating. At the end of the compression cycle, the high pressure gas discharges from the compressor, mixed with oil in aerosol droplets. The function of an Oil Separator in a Refrigeration system is to efficiently remove this oil from the discharge gas from the compressor and return it to the compressor, either directly or indirectly. This helps maintain the compressor crankcase oil level and raises the efficiency of the system by preventing excessive oil circulation. An oil management system is a cost effective alternative to replacing expensive compressors due to incorrect lubrication. If selected and installed correctly, an oil management system will give years of trouble free operation, protecting the compressors from both low and excess oil levels, with little or no maintenance. Excessive oil within the system can lead to a slug of oil returning to the compressor. A slug of oil can be as damaging to a compressor as a slug of liquid refrigerant. By removing oil from the discharge gas, the system efficiency is increased. Oil in a refrigeration or air conditioning system reduces the efficiency of the system by: A reduction in heat transfer due to oil coating of the condenser and evaporator walls and by displacing refrigerant volume resulting in an increase in system mass flow. Oil does not change phase from liquid to gas and is therefore a very poor refrigerant. A minimal amount of oil flowing through the system is necessary to provide lubrication to valves, but a very small amount is needed. Consequently, an Oil separator is an essential component in any refrigeration system, to ensure efficient operation and long life.
- Keywords
-
- OIL FILTERS
- FOR FILTERING LIQUIDS
- FOR SEPARATING
- GAS-OILS
- PART OF
- FILTERS
- Justification
- Classification has been determined in accordance with the following: For the purposes of determining the commodity codes within which goods most appropriately fall, reg 3 (1) of The Customs Tariff (Establishment) (EU Exit) Regulations 2020 sets out that the rules of interpretation contained in the following have effect – a. Part Two (Goods Classification Table Rules of Interpretation) of the Tariff of the United Kingdom (Reg 3(1)(a)); and b. Notes to a section or chapter of the Goods Classification Table (Reg 3(1)(b)). GIR 1 - Has been used to classify this product by the terms of heading 8421 - Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases. GIR 6 - Has been used to classify this product by the terms of heading 8421 99 - Of centrifuges, including centrifugal dryers. Digit Code: 842199 90 - Parts of machinery and apparatus of subheadings 8421 29 20 or 8421 39 15 Digit Code: 84219990 99 - Other than elsewhere specified Also Classified in Accordance with: Note 2(a) to Section XVI Harmonized System Explanatory Note (HSENs) to Heading 8421