WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
84.81 Taps, cocks, valves and similar appliances for pipes, boiler shells, tanks, vats or the like, including pressure-reducingvalves and thermostatically controlled valves. 848 1.30 - Pressure-reducing valves - Valves for oleohydraulic or pneumatic transmissions - Check (nonreturn) valves 848 1.40 - Safety or relief valves 848 1.80 - Other appliances - Parts 848 2.10 848 1.20 8481.90 This heading covers taps, cocks, valves and similar appliances, used on or in pipes, tanks, vats or the like to regulate the flow (for supply, dischar e, etc.), of fluids 11 uid, viscous or gaseous), or, in certain cases, of solids (e.g., sand). The eading includes suc evices designed to regulate the pressure or the flow velocity of a liquid or a gas. 6% The appliances regulate the flow by opening or closin an aperture (e.g., gate, disc, ball, plug, needle or diaphragm). They ma be operated by hand y means of a ke wheel, ress button, etc.), or by a motor, solenoid, c ock movement, etc., or y an automatic evice suc as a spring, counterweight, float lever, thermostatic element or pressure capsule. k r '7' R Taps, valves, etc., incorporating such mechanisms or devices remain classified in this headin Th~sapplies, for exam 1% to a valve equip ed with a thermostatic element (double-leaf capsule, bulb, etc.). The eading also covers va ves, etc., connected to a thermostatic element by means of, for instance, a capillary tube. P R Combinations consistin of a tap, valve, etc. and a thermostat, checking or autornatica y controlling instrument or apparatus be mounted directly in this headin if the instrument or a paratus is mounted or is character of an on the ta ,a! ve, etc., and provide the combined apparatus article o tlvs heading. If not satisfjmg these conditions, the are classified in heading 90.26 (e.g., liquid-type pressure gauge fitted with a drain cock) or in eading 90.32. fi P a K In the case of remote-control systems, only the tap, valve, etc., is classified in this heading. In general, taps, valves,.etc., are of base metal or plastics, but those of other materials (other than unhardened vulcmsed rubber, ceramics or glass) are also covered by the heading. Taps, valves, etc., remain classified here even if incorporating other accessory features (e. ., double walls for heating or coo!ing purposes; short lengths of tubin ; short Lengths of tu%e ending in a shower rose; small d n h g fountain bowls; locking devicesy. Taps, cocks, valves, etc., remain in this heading even if specialized for use on a particular machine or apparatus, or on a vehicle or aircraft. However, certain machinery parts which incorporate a complete valve, or which regulate the flow of a fluid inside a rnach~nealthough not formin a complete valve in themselves, are classified as parts of the relative machines, for examp e, inlet or exhaust valves for internal combustion engines (heading 84.09), slide valves for steam engines (heading 84.12), suction or pressure valves for air or other gas compressors (heading 84-14), pulsators for milking machines (heading 84.34) and non-automatic greasing nipples (heading 84.87). f The heading includes inter alia : The headin also includes pressure-reducing valves (sometimes called pressure regulators, pressure re ucers or pressure regulator-reducers), also mounted at the outlets of pressure containers, of boilers, on connecting feed pipe systems or near the appliances whlch they serve, to perform the same function on compressed air, steam, water, hydrocarbons or other fluids. % If combined with a pressure gau e ressure-reducing valves fall either in this heading or in heading 90.26 depending on w%;R e er or not the combined apparatus retains the essential character of a tap, valve, etc. (see the fourth paragraph of this Explanatory Note). (2) Valves for oleohydraulic or pneumatic transmissions. These valves, which may be of any ressure-reducing type, check type, etc.), are used specifically in the transmission of UI power " in a hydraulic or pneumatic system, where the energy source is supplied in the form of pressurised fluids (liquid or gas). rig..$ (3) Nonreturn valves (e.g., swing check valves and ball valves). (4) Safety valves, relief valves, etc., whether or not incorporating a warning whistle. Bursting discs (thin discs of plastics or metal) are used in certain cases as safety devices instead of valves; the are mounted by means of a special carrier on ipe systems or pressure vessels and burst at a speci c pressure. They are classified according to %e constituent material (headings 39.26, h 71.15,73.26,74.19,75.08,76.16, etc.). (5) Manifold valves (e.g., three way valves and " Christmas tree " valves). (6) Control cocks, blow-off cocks and shut offvalves, etc., for level gauges. (7) Radiator drainage taps. (8) Inner-tube valves. (9) Float controlled valves. (10) Steam traps in which the water of condensation from a steam conduit collects and which are automatically em tied (e.g,, by the operation of a float). The heading also covers steam traps in which the p ug or stopper is actuated by a thermostatic element (double-leaf or capsule) mounted inside the trap (thermostatically controlled steam traps). P (1 1) Fire-hydrants (stand pipes), fire cocks, hosepipe nozzles and the like, fitted with cocks or with valves for forming a jet or a spray. Mechanical sprinkler heads for anti-fire installations, mechanical garden sprinkler heads and the like are excluded (heading 84.24). (12) Mixing taps and valves, with two or more inlets and a mixing chamber. The heading also covers thermostatically controlled mixing valves incorporating an ad'ustable tension thermostatic element, which actuates the plugs or stoppers regulating t e admission of fluids at different temperatures into the rnix~ngchamber. h (13) Waste holes with plugs (other than simple waste holes with plugs to be inserted by hand, classified according to their constituent material). (14) Sea cocks and other underwater valves, cocks, etc., for ships. (15) Lubricating taps with flexible or telescopic tubes for lubricating shafts of steamships, etc. (16) Soda-water bottle valves. (17) Pressure spray-can lids for cans to be filled with liquid or gaseous insecticides, disinfectants, etc., under pressure, comprising a metal head fitted with a press-button displacing a needle which opens or closes the ejection orifice. (18) Taps and cocks for fitting in the bung holes of casks, barrels, etc. (19) Taps for bottle filling machines, designed to close automatically when the level of the liquid reaches the top of the bottle. (20) Gas operated beer dis ensin units for bar counters, consisting essentially of one or more hand-operated cocks ed by t e pressure of carbon dioxide piped into the casks of beer. ? % PARTS Sub'ect to the general provisions regardin the classification of parts (see the General Exp anatory Note to Section XVI), parts of 8 e appliances of this heading are also classified here. The heading also excludes ; (a) Taps, cocks, valves and similar a pliances made of unhardened vulcanised rubber (heading 40.16), ceram~cs(beading 69.03 or 69.097, or of glass (heading 70.U or 70.20). (b) U-bends for waste water in sinks, lavatories, bathrooms or the like, and also flushing cisterns whether or not equ9ped with their mechanism, which are classified according to their constituent material (e.g., headlng 39.22,69.10,73.24). (c) Centrifugal governors for steam engines (heading 84.12). (d) Steam injector or ejector pumps (heading 84.13). (e) Air spraying equipment, etc. (heading 84.24). (f) Pneumatic grease guns (heading 84.67). (g) Blowpipes for gas welding (heading 84.68). (h) Taps combined with a measuring-out device for dispensing ice cream, spirits, milk, etc. (heading 84.79).
1.- This Chapter does not cover : (a) Millstones, grindstones or other articles of Chapter 68; (b) Machinery or appliances (for example, pumps) of ceramic material and ceramic parts of machinery or appliances of any material (Chapter 69); (c) Laboratory glassware (heading 70.17); machinery, appliances or other articles for technical uses or parts thereof, of glass (heading 70.19 or 70.20); (d) Articles of heading 73.21 or 73.22 or similar articles of other base metals (Chapters 74 to 76 or 78 to 81); (e) Vacuum cleaners of heading 85.08; (f) Electro-mechanical domestic appliances of heading 85.09; digital cameras of heading 85.25; (g) Radiators for the articles of Section XVII; or (h) Hand-operated mechanical floor sweepers, not motorised (heading 96.03). 2.- Subject to the operation of Note 3 to Section XVI and subject to Note 11 to this Chapter, a machine or appliance which answers to a description in one or more of the headings 84.01 to 84.24, or heading 84.86 and at the same time to a description in one or more of the headings 84.25 to 84.80 is to be classified under the appropriate heading of the former group or under heading 84.86, as the case may be, and not the latter group. (A) Heading 84.19 does not, however, cover : (i) Germination plant, incubators or brooders (heading 84.36); (ii) Grain dampening machines (heading 84.37); (iii) Diffusing apparatus for sugar juice extraction (heading 84.38);