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Extended Duration Breathing Apparatus (EDBA) Instructor Reference Guide - February 2018, Version 1.0
@
NARU_Education
www.narueducationcentre.org.uk
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The Dräger Twin Cylinder Pack
Assemblies are approved for use
with the twin cylinder pack variants
of the DrägerMan PSS
®
7000 Twin
Series of compressed air respiratory
protection equipment.
2x 300bar, 6.8 litre cylinders.
Combined compressed air capacity
of 3672 litres.
Ultra-lightweight, carbon composite
cylinders.
Aluminum shell with Protexal anti
corrosion layer.
Over wrapped with carbon and glass
fibres, epoxy resin matrix.
External layer of glass fibre is applied
to enhance the resistance of the
cylinder to impact and abrasion.
External gel coat is applied to the
surface of the cylinder which provides
a smooth, easily cleaned surface.
Conforms to EN12245:2009.
Weight of cylinder pack approx 12kg.
20 year life.
Hydro-testing required every 5 years.
Twin cylinder packs consist of two
compressed air cylinders aligned and
secured in tandem onto a central
support strut by a pair of stainless
steel straps.
The valves can be either ratchet or
non-ratchet activation and positioned
either, facing the wearer (inboard) or
away from the wearer (outboard).
From the selected valve body, a high
pressure stainless steel capillary
tube bridges across and connects to
the second cylinder. The capillary
arrangement is shrouded and
protected by a split moulding that
forms a convenient carrying handle.
Two connector nuts (top and bottom)
attached to the central strut are used
to locate the twin cylinder pack
assembly to the mounting
arrangement on the backplate of
the compressed air respiratory
protection equipment.
