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In case of valve storage at temperature below -20°C do not use the valve until its temperature
reaches at least -20°C.
For the valves designed to be used with mixture of gases O2+N2O, the lowest operating
temperature is +5°C. In common use of the valve, frosting can appear on the valve surface,
which is caused by common physical reaction inside the valve when high pressure in the
valve is reduced to low pressure (Joule-Thomson e ect). Check that all associated equipment
is connected to the valve via a hose of the length of at least 2 metres.
4. PERSONNEL INSTRUCTIONS
The Medical Devices Directive 93/42/EEC states that product provider must ensure that all
personnel handling the product are provided with the operating instructions & performance
data.
Do not use the product without properly familiarization of the product and its safe operation
as defi ned in this Instruction for use. Ensure user is aware of particular information and
knowledge required for the gas in use.
5. PRODUCT DESCRIPTION
Combination valve combines the function of shut-off valve of a high-gas cylinder and pressure
regulator for the use with medical gases. Gas from the cylinder is fi rst controlled by the main
shut-off valve and then passes through the pressure regulator and fi nally delivered to the
patient through the fl ow outlet or the pressure outlet. Outlet positive pressure is fi xed by the
manufacturer and each valve is provided with (external or internal) low-pressure relief valve
against undesirable exceeding of outlet positive pressure.
There are three basic alternatives:
•
valve outlet via quick-coupler, the outlet fl ow is a constant one.
•
valve outlet via calibrated nozzles, outlet fl ows can be changed by the control knob
the combination of both alternatives selector control knob.
•
A
INLET STEM
The valve is fi tted to gas cylinder by a threaded inlet stem. The inlet stem can be taper threaded
or parallel threaded of diff erent size depending upon cylinder size and material.
B
FILLING PORT
Filling port is provided for fi lling the gas
cylinder. It includes a non-return valve (NRV).
The NRV means that special fi lling adaptors
are required to vent gas from the cylinder
during the fi lling process.
C
PRESSURE GAUGE
A cylinder contents pressure gauge is
provided. This can be active or non-active.
Versions fi tted with active pressure gauge
enable to check cylinder content at shut-
off valve in both ON and OFF positions. The
versions fi tted with non-active pressure gauge
enable to check cylinder content at shut-off
valve in ON position only.
D
SHUT OFF VALVE
The combination valve is provided with a shut-
off valve to isolate the gas from the cylinder
from the other valve functions. It must be
turned on during cylinder fi lling and patient
therapy.
H
D
3/40
EN
F
B
G
A
E
C
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