Dive Rite O2ptima Owner's Manual download pdf (Page 18)

Dive Rite

Ch. 2 Pg. 6

Diluent First Stage and Connections

The diluent first stage is the Dive Rite Model RG1208. The IP (intermediate pressure) should

be set to factory standards of 140 psi (9.7 Bar). The normal configuration from the factory is a

LP feed connected to a 3 port manifold, a LP inflator for the manual diluent addition valve, a

first stage over-pressure valve (OPV), and a submersible pressure gauge. The manifold feeds a

gas cut-off valve for the ADV, a Dive Rite RG1215 second stage and a “spare” port for a LP

inflator to supply a wing.

Warning!!

The OPV located on the diluent First stage should never be removed.

The second stage is the primary pressure release mechanism with the

OPV for failsafe protection. This is an important piece of safety

equipment should the HP seat of the first stage fail. The LP hoses can

not withstand the high pressures as supplied from the cylinder and

will cause a hose rupture. Large volumes of gas may be forced into

the counter-lungs through ADV (when enabled) causing a change in buoyancy and possible injury.

Diluent Side Assembly as supplied by the factory

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Dive Rite O2ptima Owner's Manual Page 18