1-6. Equipment Characterlstlcs, Capabilities, and Features - continued.
b. Capabilities and Features.
(1) Capable of operating from both a main breathing air supply or an emergency supply.
(2) Capable of communicating with surface personnel.
(3) Woven fiberglass and polyester resin construction resists cracks and will not carry an electrical
(4) Offers complete head protection (head, ears, and face remain dry).
1-7. Location and Description of Major Components.
Convenience for carrying and handling the helmet. Can also be used to
mount lights or tape weights or other items to helmet.
Provides field of vision for diver.
Provides automatic water purging for any flooding.
Neck Dam System
Secures the helmet from accidental removal by firmly locking helmet
around diver's neck.
Waterproof four-pin connector for sending and receiving communications
Supplies breathing air to diver on demand and shuts off during the
exhalation portion of breathing cycle.
Side Block Assembly
Manifold that receives breathing air from the main or emergency supply,
then directs air flow to the demand regulator.
Nose Clearing Device
Allows diver to block his (her) nose to provide an overpressure in the sinus
and inner ear for equalization.