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The basic device 4500 PL/BN is a connector between a positive pressure full face mask according to EN 136 with ESA plug in connector and DZS 9 / DZS 9R compressed-air supply hose to the compressed-air source and includes an positive pressure dema...nd valve with a ESA unit plug-in connection according to DIN 58600.Thanks to the warning system permanently-integrated in the demand valve, the user is also directly warned about residual pressure when using our pressure reducer DM 500 or DM 1900 Unmistakeable sound, dirt tolerant, and without additional air consumption

Additional Information

Basic device, positive pressure demand valve, plug-in connection ESA
A distinction is made between devices with
a control valve (continuous air supply) and
automatically operated devices (demand valve).
Compressed air-line breathing apparatuses with demand valves
only supply breathing air when the user of the respirator
is breathing in. These devices consume less air than
compressed air-line breathing apparatuses
with continuous volume flow.
A compressed air-line breathing apparatus with a demand valve
is particularly suitable for breathing air supply from compressed-air
One differentiates between negative pressure and
positive pressure devices. Devices with positive pressure generate positive pressure
in the face piece. The positive pressure prevents
the entry of hazardous substances from the surrounding atmosphere into
the face piece.
Compressed air -line breathing apparatus with demand valve
Regardless of the ambient atmosphere, compressed air-line breathing apparatuses offer the most comprehensive protection against
damaging ambient conditions. The required air is supplied to the face piece
via supply hoses i.e. the users move in a defined
operating range during work which is limited by the hose lengths. The breatheable air is provided from compressed-air cylinders
compressed-air networks or compressors. In this way, long operating times can be achieved.
EN 14593-1