User manual

15
3.5.5 PRESSURE GAUGE
• Pressure in the cylinder pack can be read from the pressure gauge. The pressure gauge is connected to
the regulator's connecting pipe via a high-pressure hose. The air pressure affects a Bourdon tube (a pipe-
shaped spring) in the pressure gauge, which in turn affects the indicator. The safety valve (behind the rubber
covering) on the rear of the pressure gauge opens if the pressure in the pressure gauge casing rises too much.
The rubber covering protects the pressure gauge from impact damage and dirt.
3.6 BREATHING VALVE
• The Divator breathing valve is available in three designs:
(1) Primary with safety pressure (2) Primary without safety pressure
(3) Secondary (octopus) with locking handle and without safety pressure
The primary breathing valves are available in black or gray. The octopus breathing valve in only available
in black with a yellow protective ring.
The primary breathing valves are mounted in the face mask using a bayonet coupling. All breathing valves
are demand valves that supply the diver with air only during inhalation.
The Divator breathing valve is balanced and maintains an extremely low respiratory resistance at all diving
depths, even if secondary pressure varies.
The breathing valve is also designed to function as a safety valve for the rst-stage regulator. If secondary
pressure from the rst-stage regulator increases to approximately 14 bar (203 psi), the overpressure valve
on the breathing valve opens. This prevents overpressure in the secondary system components.
As an additional safety feature, there is a check valve in the inhalation channel to prevent water from
penetrating the valve mechanism where it can freeze and cause the valve to stick in open position.