SCUBA - Self-Contained Underwater Breathing Apparatus 06
SCUBA - Self-Contained Underwater Breathing Apparatus 06 : Etymology: (1) Open-Circuit Regulator: Diving regulator. The most commonly used scuba set today is the "single-hose" open circuit 2-stage diving regulator, connected to a single high pressure gas cylinder, with the first stage connected to the cylinder valve and the second stage at the mouthpiece. This arrangement differs from Emile Gagnan's and Jacques Cousteau's original 1942 "twin-hose" design, known as the Aqua-lung, in which the cylinder pressure was reduced to ambient pressure in one or two stages which were all in the housing mounted to the cylinder valve or manifols. The "single-hose" system has significant advantages over the original system for most applications. In the "single-hose" two-stage design, the first stage regulator reduces the cylinder pressure of up to about 240 bar (3000 psi) to an intermediate level of about 10 bar (145 psi) above ambient pressure. The second stage demand valve regulator, supplied by a low pressure hose from the first stage, delivers the breathing gas at ambient pressure to the diver's mouth. The exhaled gases are exhausted directly to the environment as waste. The first stage typically has at least one outlet port delivering breathing gas at unreduced tank pressure. This is connected to the diver's submersible pressure gauge or dive computer, to show how much breathing gas remains in the cylinder
No records Found