Breathing Apparatus Gas Supply Valve SCBA Demand Valve
Descripation:
The demand valve provides air to the wearer demanding on the air
breathing need of the water. It ensures a higher air pressure
inside the face mask than the outside pressure.
The demand valve can be manually switched off thanks to the
switcher on the top of the valve, and then no air is provided to
the face mask. The demand valve is automatically switched on at the
first inhalation of the wearer.
At the central bottom of valve ,there is a manual control air
supply button to be used to:
- Switch on the demand valve manually;
- Gave an additional breath of the wearer feels supply deficiency.
Besides, it can release the remaining air inside the medium
pressure hose which is more convenient for test and disassembly of
the quick connector.
Medium-pressure air through a hose connected with the valve was
pumped to supply valve. For the valve can guarantee to provide low
pressure air to the mask.
Additional gas supply and pressure relief button for non-switching
by inhalation directly to the face mask in a constant supply of
reserve gas supply security agencies, additional supply and
pressure relief button is pressed, the system of sustainable gas
supply or pressure relief. On the contrary that the bypass valve
closed. Normal working hours do not need to press the button for
additional gas supply and pressure relief.
Feature:
It’s lightweight and the structure is compact.
It’s made of fire resistant material and fast connected with the
mask throng spring button and express interface.
The gas supply valve is connected with the reducer through the
medium pressure hose. When the user breath difficultly, they can
press the red button "on" and the valve will increase the amount of
gas to 450 L / min automatically (air supply valve will reach the
amount of gas in 1/10 seconds).
Maximum gas supply: 450 L / min
- Pluggable structure for demand valve connector, safe and
convenient;
- Clipper-built appearance;
- Manual control switcher, easy to switch on;
- Manual control air supply button;
- Medium pressure inhalation hose.
