Deck 2014: Safety

1. A The valve opens in excessive heat to release the oxygen in the bottle and prevent the bottle from exploding.
2. B In the event of a malfunction in the equipment, the valve can be operated manually to give the wearer air.
3. C When pressure in the apparatus exceeds 7 psi above  atmospheric pressure, the valve opens to release pressure.
4. D The valve reduces the high pressure in the bottle to about 3 psi above atmospheric pressure.

Tip: press A-D to answer