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EN
The harness is also equipped with a neck band allowing to carry the mask before donning
it. All the rubber components are made of compounds which are designed in order to give
maximum resistance to wear and tear, to atmospheric and chemical agents, high and low
temperatures. Sfera is available in the EPDM and silicone rubber versions. In both versions,
it is equipped with M45x3 thread complying with EN 148/3 standard.
SFERA SP/A ASB is also equipped with a bayonet connector for a high efficiency particulate
filter.
MODEL
THREADED CONNECTOR
CODE
SFERA SP/A ASB EPDM
M 45 x 3
4344.2060
SFERA SP/A ASB Sil
M 45 x 3
4344.2061
The SFERA ASB mask must be used only with the Diablo Amiante.
Particulate filter ASB P3
The SFERA SP/A ASB has, on its left side a bayonet connector for a P3 particulate filter model
ASB P3 which grants an efficiency against dust particles greater than 99,95% according to
Standard EN 143:00/A1:2006.
The filter is equipped with a permantly attached gasket which is therefore replaced everytime
the filter is changed.
Additionally to the filter body is attached a plug to blind the filter in normal operation thus
preventing breathable air waste from the airline.
E400 AP/A ASB self positive demand valve
E400 AP/A ASB is a positive pressure demand valve of the self-switching type. Its threaded
connector (M45x3) complies with the EN 148/3 Standard. The AP/A ASB self-positive
demand valve belongs to the most advanced generation of demand valves. In fact, it has
been designed to be able to switch automatically from a stand-by mode with no air flow, to
the positive pressure mode by means of the wearer’s first inhalation. This switching requires
to overcome a very limited additional breathing resistance, but it does not require any action
to be intentionally performed by the operator, who can easily forget about it, being himself/
herself too busy during an intervention. At the end of the intervention, by pressing the red
knob placed in the centre of the demand valve, the demand valve itself is brought back to a
stand-by mode. The demand valve medium-pressure air hose is permanently connected to
the medium pressure filter unit.
E400 AP/A self positive demand valve
EN