Posted under Uncategorized
Filling compressed gas cylinders is a serious matter. The Federal Government says that it’s illegal to fill gas cylinders beyond their rated fill pressures. Injuries at the fill station are common. Gas cylinder filling is a Hazmat situation that requires training for any individual who provides pressurized gas fills. Many divers want a “good fill” but what is a good fill? Divers seem to want their cylinders overpressurized meaning more than the cylinder is rated for. Cylinders are engineered & tested to allow for their maximum fill pressures. When cylinders get taken above their engineered max fill pressure things can go wrong. Cylinders will begin to weaken & potentially they will fail their hydrostatic test. It compromises the bust disc causing the burst disc to get bulged & then the burst disc can let go well below its rated burst pressure & at any given time (even U/W!) Most of our more discerning divers bring their cylinders in to fill well in advance so as to allow us to fill nice & slow, allow for cooling then to top up to the final psi while cooled.
Here is a piece of diving history! We recently serviced this Royal Aqualung DA Aquamaster double hose regulator for David Knight. It now works better than new. Something to consider for photo as the exhaust bubbles are out the back plus the retro cool factor is over the top!
Keep an eye out for the new shop giant inflatable dive cylinder 35′ high & 4′ in diameter! We will have this notable monstrosity staged outside & on the shop in various areas for all to enjoy! 
