Scuba cylinder valve
Videos
A scuba cylinder valve or pillar valve is a high pressure manually operated screw-down shut off valve fitted to the neck of a scuba cylinder to control breathing gas flow to and from the pressure vess
Top of 7 litre steel cylinder with parallel neck thread with valve fitted
Draeger 300 bar taper thread DIN cylinder valve
A 232 bar DIN connection cylinder valve with M25x2 parallel thread cylinder connection
Parallel thread scuba cylinder valve with sintered filter on dip tube and concentric valve spindle
Nitrox
Videos
Nitrox refers to any gas mixture composed of nitrogen and oxygen. It is usually used for mixtures that contain less than 78% nitrogen by volume. In the usual application, underwater diving, nitrox is
Enriched Air Nitrox diving tables, showing adjusted no-decompression times.
Technical divers preparing for a mixed-gas decompression dive in Bohol, Philippines. Note the backplate and wing setup with side mounted stage tanks containing EAN50 (left side) and pure oxygen (right side).
Cylinder showing Nitrox band and sticker marked with maximum operating depth (MOD) and oxygen fraction (%O2)