Sourcing Rotameters from China

Rotameter duty and classification

Heading 9026 covers instruments measuring or checking liquid or gas variables. For rotameters, distinguish liquid from gas measurement, electronic from non-electronic instruments, and complete meters from parts. A float display alone does not describe the whole product: provide details of any transmitter or electronic output.

Read from the UK Trade Tariff on 30 September 2026, the selected liquid and gas instrument codes and parts code carry 0% duty for goods from China. These lines show no anti-dumping or countervailing duty, suspensions or attached import controls. Import VAT is normally 20%; see UK import duty and VAT.

Confirm the commodity code using the measured medium, operating principle and electronic functions. The table gives relevant categories, rather than a classification decision for an individual model. See the wider flow meters and pressure gauges guide.

Specify the float, tube and calibration conditions

State the fluid, flow range, scale units, operating pressure and temperature, mounting orientation and acceptable measurement error. For gas scales, record the reference pressure and temperature and whether pressure is absolute or gauge. Ask the supplier to identify the float reading point and explain any correction needed for your conditions.

Specify glass, plastic or metal tube construction, float and seal materials, connection threads or flanges, overall dimensions and any valve, alarm or transmitter. Agree a sample test using the intended fluid or a documented calibration method, with certificates matched to serial numbers.

Check pressure equipment scope before selling in Great Britain: the Pressure Equipment (Safety) Regulations apply to pressure equipment and assemblies above 0.5 bar maximum allowable pressure, subject to exclusions. Obtain the supplier's classification for the model. For equipment within scope, the importer must ensure that easily understandable English instructions accompany it.

For models intended for potentially explosive atmospheres, confirm the applicable equipment regulations with the relevant product safety authority. Ask for the declaration and certificates it confirms are appropriate to the equipment category. For liquid measurement used in sales, confirm with the relevant metrology authority whether regulated measuring-system rules and conformity assessment apply. Settle the intended use before ordering.

Worked duty example

Illustrative example, not a quote: Illustrative order of 800 metal-tube liquid rotameters under 9026 10 81 00, invoiced at £96,000 free on board, with £3,500 of freight and insurance to the UK. The customs value is £99,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £99,500, so it is £19,900. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Scale and calibration: match fluid, units, reference conditions and serial number to the order and certificate. Compare readings across the agreed working range, using the specified float reading point.

Float and tube: check that the float moves freely without rubbing or sticking. Inspect transparent tubes for cracks and unclear graduations, and compare tube and float identification with the approved sample.

Connections and sealing: check thread form, flange dimensions, seals and flow direction. Run the agreed leak and operating checks within the supplier's documented safe limits.

Documents and outputs: match manuals, certificates and model labels to the delivered meters. Check any alarm or transmitter against the float indication. Record arrival defects through quality inspection.

What goes wrong

A scale calibrated for water or air can give misleading readings with another fluid or different operating conditions. Gas reference conditions are easily confused with actual line conditions. A replacement float or tube that looks interchangeable may not match the original calibration.

Floats stick when tubes are damaged or contaminated, transparent tubes crack in transit, and mismatched threads leak. Unclear reading instructions create inconsistent results between operators. Compare the delivered assembly with the approved sample and resolve calibration or sealing discrepancies before release.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.