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This Guide is made available for the express use of owners and users of the Dive Lab XLDS systems.
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Document XLDS Guide – Section Two
Revised July 17, 2019
5
SECTION TWO: CONCEPT AND INTENDED USE
High Pressure Supply
The High-Pressure Supply System is for air diving
only, and is not designed or intended for
breathing gases with an oxygen content greater
than 21% oxygen by volume however the system
has provisions for integration of pure oxygen or
oxygen enriched gas for in water decompression,
using a separate Dive Lab system known as the
Surface Supply Oxygen Control Console System
(SSOCS). The SSOCS that can be interfaced with
the reduced pressure Manifold. The oxygen
system is intended for use to a maximum depth
of 50 FSW, for decompression purposes only.
The HP air supply system is rated for up to 5000
psig service with properly rated fittings. The HP
system should only be supplied with breathing
quality air via sources at supply pressures of 400
PSIG or greater capable of supplying at least 500
LPM. Typical air supply sources include standard
single or double SCUBA Cylinders, Fire Fighting
Cylinders, and/or any high-pressure supply up to
4350 psig, if DIN fittings are in use.
The standard High-Pressure Air Supply System for
both the RDC-2 and RDC-3 for each diver circuit
consists of two SCUBA “A” Yokes / DIN
combination connections with Bleed Valves, and
short (12”-18”) whips. Each set of Yokes sends air
via the short Whips, to an isolation valve on a
small manifold block used for supply, isolation
and air switching. From the Junction Block air
travels via a 6’ to 25’ long whip, to the console
pressure regulators. On the RDC-3 the third diver
(Yellow Diver), is the standby.
Each HP supply assembly quickly connects to the
Regulator Inlets through the use of 72” long
whips, ZCO O-ring fittings. The “A” Yokes are
rated for 3500 psig and the DIN fittings, are rated
for 4350 PSIG service. Other configurations of
supply whips and fittings are available. The flow
capability of the high-pressure
system, enables
standard SCUBA Cylinders, to be used as low as
380 PSIG, before Cylinder switch-out is necessary.
Other supply whips and configurations, can be
used, providing they can provide the proper
volume.
Typical High Pressure Assemblies
Special Purpose High Pressure Assembly
High Pressure Assembly with Gas Storage Cylinders
