Will a UK dive centre fill a cylinder from China?
A UK dive centre may fill a cylinder bought from China, but get its acceptance criteria before ordering. Send the exact cylinder markings, conformity documents, valve specification and inspection evidence; acceptance remains subject to checking the delivered cylinder. Cambridge China Bridge can coordinate these checks with its staff in China.
Get the filling centre's agreement before buying
Choose the centre that will actually fill your cylinders. Send the manufacturer's name, exact model, material, intended breathing gas, working pressure, photographs of the proposed markings and the supporting documents. Ask for written confirmation of what it will accept, what arrival checks it wants and what would cause refusal.
HSE advises cylinder owners to ask their filling company who should conduct inspection and testing. Ask whether the centre accepts the proposed inspection provider and whether it wants a local examination before the first fill. Make satisfactory document review and arrival inspection agreed purchase conditions; a factory's promise that a cylinder is suitable for UK diving does not settle acceptance.
Match the markings to the actual cylinder
For breathing-apparatus cylinders, our aluminium cylinder guide explains the pressure-equipment distinction and material-specific sourcing checks. Government guidance confirms continued recognition of CE marking in Great Britain. Ask which conformity route covers the exact cylinder and request its declaration, supporting assessment documents and readable photographs of the markings. A logo photograph alone is insufficient for your acceptance review.
Compare the manufacturer, model, serial or batch identification, design standard, working and test pressure, water capacity and manufacturing date against the documents. Ask the centre to distinguish original manufacturing marks from subsequent inspection marks and labels. Resolve missing, inconsistent or unreadable information before dispatch. Use our test-report verification guide to check that evidence belongs to the product being supplied.
Check both valve connections
Treat the cylinder-neck connection and the valve's filling connection as separate checks. Obtain drawings identifying the neck thread, matching valve inlet thread, sealing arrangement, valve outlet and pressure rating. Ask the centre to confirm compatibility with its filling equipment and your regulators, including the intended gas service. An adaptor at the outlet cannot establish that the valve fits the cylinder neck.
HSE recommends that competent people fit cylinder valves in accordance with the manufacturer's instructions. Have the centre or its nominated technician review the cylinder and valve combination before purchase. Ask who will fit the valve, what fitting instructions will be followed and what checks will be recorded. Do not accept apparent thread engagement as proof of compatibility.
Agree the evidence needed for the first fill
Ask for manufacturing and batch test records linked to the supplied cylinders, plus any subsequent inspection report, inspection markings and next inspection date. Have the centre explain which records it accepts for a new cylinder and which examination it requires after delivery. Keep manufacturing evidence and in-service inspection evidence separately identifiable; do not assume a factory pressure test answers every filling-centre check.
Agree an arrival check for damage, internal condition and contamination before filling. HSE advises internal inspection before filling if water may have entered the cylinder. Tell the centre about any open-neck shipment, removed valve, wet packaging or suspected contamination. For oxygen-enriched gas, ask the filler what cleaning and compatibility evidence it wants. Add the agreed checks to the shipment inspection brief.
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Settle transport before dispatch
Give the freight forwarder and receiving centre the cylinder specification, intended gas and actual shipment condition. Ask the carrier to confirm acceptance, classification, documents, labels and packing for the booked route. Agree whether cylinders will travel without gas, whether valves stay fitted and how the necks remain protected and dry. Do not describe a shipment as ordinary freight merely because the supplier calls the cylinders empty.
Agree who prepares the cylinders for shipment, secures them against movement and protects the valves, and who arranges the onward journey to the filling centre. Leave depressurisation or valve removal to the nominated competent provider. Obtain photographs and an itemised cylinder record before dispatch. If arrival checks fail, hold the cylinders out of service while the centre and supplier agree a documented remedy.
Frequently asked questions
Will every UK dive shop fill a Chinese cylinder?
Do not assume acceptance. Ask your chosen filler to review the exact cylinder, valve and documents before purchase, and confirm its arrival inspection conditions.
Is a CE mark enough for a dive centre to fill it?
A mark alone does not settle acceptance. Send matching conformity documents, cylinder identification, valve details and inspection evidence to the filler.
Can I replace the valve to make the cylinder fit?
Ask a competent technician to assess the neck thread, sealing arrangement, pressure rating and gas compatibility. Changing the outlet connection does not resolve missing cylinder evidence.
Can I ship an empty diving cylinder by courier?
Ask the courier about the actual cylinder condition and booked route before dispatch. Obtain its packing and document instructions, and agree how the neck and valve will be protected.