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Beschikbare talen
MARKING DETAIL
EN
Marking detail
Total weight
allowance of the
package
Filling port type
Inlet connection
Additional
type
information
End of lifetime
Inlet pressure
Reference
Compliance with CDG
number
TPE (Amendment) &
Serial number
(EU Exit) Regulations
Compliance with
2020
2010/35 EU
Compliance with
93/42/EEC
Note: The content of the marking is always the same, the position on the valve may vary
depending on the type.
A – INLET STEM
The combination valve is fitted to gas cylinder by a threaded inlet stem. The inlet stem can
be taper threaded or parallel threaded with different size depending on the cylinder size and
material.
B – FILLING PORT
A filling port is provided for filling the gas cylinder at a filling station, it has no function for
patient use. It includes a non-return valve (NRV). The NRV means that special filling adaptors
are required to vent gas from the cylinder during the filling process (venting and/or vacuuming
of cylinders).
C – INLET PRESSURE INDICATOR
Inlet pressure indicator is intended to indicate amount of gas in the gas cylinder. The pressure
indicator is of an active type which means it indicates amount of gas in the gas cylinder whether
the shut-off valve is opened or closed.
D – SHUT-OFF VALVE
The combination valve is provided with a shut-off valve to isolate the gas in the cylinder from
the rest of combination valve functions. It must be opened during cylinder filling and patient's
therapy. Part of the handwheel is an indicator showing open/close status of the shut-off valve.
The shut-off valve open/close status indicator is for guidance only. The shut-off valve may not
be fully off when OFF status is showing. Fully closed status has to be checked by ensuring the
shut-off valve is turned fully clockwise until a firm resistance to rotation is reached and gas
supply to the outlets has stopped.
The shut-off valve must not be used in the "partly ON" status because even though gas is
supplied to the outlets, the flow can be limited due to insufficiently opened shut-off valve.
E – RESIDUAL PRESSURE VALVE
Combination valve is equipped with a residual pressure valve with function to retain a minimum
positive pressure in the gas cylinder to avoid contamination of the cylinder content by
atmospheric air. During cylinder gas ventilation through the filling port the residual pressure
valve is by passed.
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