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A typical graph produced when testing the breathing performance of a diving regulator. The breathing performance of regulators is a measure of the ability of a breathing gas regulator to meet the demands placed on it at varying ambient pressures and temperatures, and under varying breathing loads, for the range of breathing gases it may be expected to deliver.
Aeris brand covered a wide range of recreational scuba equipment, including regulators, dive computers, buoyancy compensators, harnesses, masks, fins, and snorkels. [2] Aerotec Industries Inc. Norseman scuba regulators. [3] Aer-Sub, also known as Spiro-Sub – Branding used by Cressi-Sub for scuba equipment Trademarks used by Cressi-sub. [4]
A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving.The most commonly recognised application is to reduce pressurized breathing gas to ambient pressure and deliver it to the diver, but there are also other types of gas pressure regulator used for diving applications.
A recreational diver with 50 bar of air or nitrox carried in a 12 litre cyliner will have about 0.780 kg of gas, and therefore about 0.78 litres of gas in the BC. A depth change of 1 m upwards will change ambient absolute pressure from 1.3 bar to 1.2 bar so the gas in the BC will expand to 1.3/1.2 × 0.78 = 0.845 litres, a difference of 0.065 ...
BC-3, BC.3, BC 3, BC3 or variant may refer to: Vultee BT-13 Valiant; 3 BC, the year; BC3, the IAU Minor Planet Center nomenclature for small solar system bodies 1982 BC3, a.k.a. 2674 Pandarus; 1997 BC3, a.k.a. 22467 Koharumi; BC3, boccia classification; Butler County Community College (Pennsylvania) Brilliance BC3
A hydrostatic test involves pressurising the cylinder to its test pressure (usually 5/3 or 3/2 of the working pressure) and measuring its volume before and after the test. A permanent increase in volume above the tolerated level means the cylinder fails the test and must be permanently removed from service. [3]: sect. 5.7.3