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2. Diving air compressor - Wikipedia

   en.wikipedia.org/wiki/Diving_air_compressor

   Filling a cylinder from the panel Low pressure breathing air compressor intended for use with airline diving equipment. High pressure diving compressors are generally three- or four-stage-reciprocating air compressors that are lubricated with a high-grade mineral or synthetic compressor oil free of toxic additives (a few use ceramic-lined cylinders with O-rings, not piston rings, requiring no ...

3. Olympic-class ocean liner - Wikipedia

   en.wikipedia.org/wiki/Olympic-class_ocean_liner

   64 ft 9 in (20 m) from keel to side of C-deck: Decks: 9: Installed power: 24 double-ended and 5 single-ended 15 bar Scotch marine boilers, tested to 30 bar. Two 4-cylinder reciprocating engines for the two outboard wing propellers. One low-pressure turbine for center propeller. Together 50,000 HP nominal, 59,000 max. [2] [3] [4] Propulsion

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5. Mechanism of diving regulators - Wikipedia

   en.wikipedia.org/wiki/Mechanism_of_diving_regulators

   The purge button (top-centre) is held away from the diaphragm by a spring. The valve is closed. The mechanism of diving regulators is the arrangement of components and function of gas pressure regulators used in the systems which supply breathing gases for underwater diving.

6. Surface-supplied diving equipment - Wikipedia

   en.wikipedia.org/wiki/Surface-supplied_diving...

   Delivery pressure for 12 metres (39 ft) is about 20 to 35 pounds per square inch (1.4 to 2.4 bar) using a hookah regulator. Depths of 40 metres (130 ft) require up to 9 bars (130 psi). The pressure relief valve will blow off excess air delivered at low demand, to protect the system from overpressure loads, while delivering sufficient air for ...

7. Diving regulator - Wikipedia

   en.wikipedia.org/wiki/Diving_regulator

   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.

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9. Remotely operated underwater vehicle - Wikipedia

   en.wikipedia.org/wiki/Remotely_operated...

   ROV at work in an underwater oil and gas field. The ROV is using a torque wrench to adjust a valve on a subsea structure.. A remotely operated underwater vehicle (ROUV) [citation needed] or remotely operated vehicle (ROV) is a free-swimming submersible craft used to perform underwater observation, inspection and physical tasks such as valve operations, hydraulic functions and other general ...