Oxygen Services

CSTS is an MHRA registered supplier of medical oxygen


Oxygen Cylinder Services

  • Re-filling service for privately owned medical oxygen cylinders
  • Supply of cylinders, to organisations or individuals, requiring medical oxygen for resuscitation or therapy use
  • Cylinder testing
  • Cylinder valve servicing
  • Servicing of associated equipment (MARS Resuscitator and Portaflow therapy units)
  • Replacement equipment whilst yours is being serviced (enquire for availability)


Oxygen Cylinder Contract Hire

CSTS supplies oxygen cylinders on long term or contract hire. Hiring offers many benefits:

  • Replacement/exchange cylinders when refills are required
  • Delivery and collection
  • Testing and servicing (in accordance with statutory requirements).
  • Record keeping and servicing schedule reminders.

Medical oxygen refill prices

These prices apply to a maximum of 3 litres (water capacity),
for cylinders larger than this please ring for details - 0208 8055 144

Oxygen Refill - max cylinder size of 3 litres (water capacity)

Price per cylinder (inc vat)

Cylinder Refill (inc. collection and delivery fees)* see notes below
Additional refills returned at the same time as the above (max of 2 if required)
Loan cylinder (can be supplied with therapy mask and carry bag)** see notes below.

*On receipt your cylinder will be inspected and should additional work be required CSTS will contact you to seek your approval before proceeding.

**Charges will apply if these accessories are not returned in an unused condition.


Contact us

For advice, enquiries or to make a booking, please please call 0208 8055 144
Or email us oxygen@csts.co.uk

Download the CSTS 2018 Medical Oxygen Refill Request form:

For further information or to help you identify the oxygen equipment you have scroll down to the information below, or, download the CSTS quick guide:

Medical Oxygen Cylinder Advice

Hydrostatic Test
An oxygen cylinder should be hydrostatically tested every 5 years; the date is shown as a month and a year and is stamped on the shoulder of the cylinder. This picture shows that the cylinder was tested in August 2007. It will require a re-test before the end of August 2012. Frequently the cylinder may also have attached a coloured sticky label stating 2007, whilst these are useful they should never be relied on totally.

Cylinder Hydrostatic Test.jpg

Cylinder Gauge
The gauge on an oxygen cylinder will usually have coloured sectors to indicate how much oxygen remains in the cylinder. This cylinder is full and should not be made available for use if the gauge needle is in the red sector. Do note that depending on the device a valve may have to be opened before a contents reading can be taken. If this is the case the valve must be closed afterwards and the device purged returning the gauge needle to the zero position.


Batch Label
The batch label must be legible, if for any reason it is missing or cannot be read it must be assumed that the expiry date for the Oxygen has been exceeded, in which case the gas must be replenished.


Cylinder Valves
These are examples of common types of valves used; the flow rates are variable depending on the concentration of cxygen that is required to be delivered to the patient. The older version on the right will probably only have a single flow setting and is unlikely to meet modern requirements, it will eventually require upgrading. Parts for these are hard to come by and if the cylinder is being hydrostatically tested it may be a good time to change the valve.


Oxygen Therapy
These pictures below, show an example of a detachable therapy unit for use with a Pin Index valved cylinder; the picture on the left also shows the special spanner that is usually attached to the unit either by a cord or a chain. The picture on the right shows the therapy unit attached to a Pin Index valve. Pin Index cylinder valves do not have a pressure gauge fitted, but the devices that are used with them do. These will need connecting to the valve and the valve turned on to register the pressure remaining in the cylinder. Do remember to switch the cylinder off once a reading has been taken and purge any Oxygen to zero the pressure gauge.


This picture shows a therapy valve clearly displaying the service dates, the label at the top just below the hand-wheel indicates the last service date and also the next service due date. This is reinforced by the spanner symbol with Oct'12, which highlights that the device is due a service prior to the end of October 2012.

Oxygen Therapy Unit 3.jpg

 Resuscitation units
These pictures show examples of resuscitation units that are available; these are fitted with Pin Index cylinders. The resuscitators are more complex than the therapy type of units and require a more intricate testing. They should be tested by a competent person with the correct equipment at least once a year. Test certificates should be available and are often kept in the carry case, if in any doubt they must be retested.