111-0063-00 (Doc 556M)
Page 5 of 8
ISSUE H
18/03/2021
5.1 Before connecting to a pressurised gas source, please ensure the unit is clean and in
good condition. If you have any doubts about the condition, please do not connect or use
the device. Please check that the inhalation diaphragm is fitted to the device and seated
correctly (laying flat against the body of the device).
5.2 Ensure that the supply hose attached to the demand valve is connected to an Oxygen
Medical Gas supply that uses the correct respective Medical Gas fitting.
5.3 If using an Oxygen regulator, please check that the cylinder has adequate gas and that
the cylinder valve is turned on. It is suggested that the portable cylinder is at least half full
and that additional cylinders are available if required.
5.4 Before administering Oxygen to the patient, please check the availability of gas by briefly
pressing the ‘Flus/test’ button, located on the top of the Demand Valve. Please check
that there are no audible sounds of gas flow once the ‘Flush/Test’ button has been
released.
5.5 It is strongly advised to use a single use filter with the Demand Valve to minimise the risk
of contamination of the device and a subsequent cross contamination between users.
Connect a universal patient inhalation mask or single use patient inhalation
mask/mouthpiece to the single use filter.
5.6 The Demand Valve is now ready for use. The user should be instructed to inhale through
the mouthpiece or face mask connected to the patient connection port fitted to the
Demand Valve. Doing so will create a negative pressure on the patient connection port
which will activate the supply of Medical Oxygen. The larger the breath taken by the user,
the greater the supply of Oxygen. Please advise the user not to press the ‘Flush/Test’
button whilst the device is in use.
5.7 The user is able to exhale through the mouthpiece or face mask.
5.8 The Demand Valve will stop supplying gas when the user stops inhaling. The exhaled
gas will exit through the Demand Valve via the exhalation port.
5.9 The device should continue to be used under the supervision of medically trained
professionals.
5.10 The duration of use of the device is to be determined by the medically trained
professionals who are supervising the use of the Demand Valve.
