Air compressors have diversified greatly and have various applications today. One such application is scuba diving. Divers need constant, balanced and safe air when underwater. The tanks that they carry may not last forever and will need to be refilled once the air inside the tank has been used up.
Usually when diving at places far away from the land, the tanks need to be refilled, right there, at the sea. Scuba air compressors come in handy here. They are portable devices that fill in air into backpack air tanks, which the divers carry with them. They are small compressors, generally powered by internal combustion engines (usually 5.5 hp). They are designed to be light, so as to enable and enhance portability.
There are many manufacturers in the market today, with new products being rolled out every day, providing new and innovative features.
New scuba air compressors take around 20 minutes for filling an 80 cubic feet cylinder from 500 psi to 3000 psi. They usually weigh 85 lbs with carrying handles. They deliver around 3.5 CFM @ 3200 psi. They have separate chambers both for oil and water. Some expensive models provide Tri-Chem breathing air purification system, to provide safe air for divers. The purification cartridges are convenient and easy to replace. The gasoline versions have digital tachometers that are of significant value. Pressure maintaining valves have now become a standard fitment in almost all scuba air compressors. These compressors use splash lubrication, made possible by an oil thrower pin.
While buying a scuba air compressor, make sure that it meets international breathing air standards. Health is the last thing that you would want to compromise on.
Thus, air compressors have found their niches in various applications today. Since inception, they have really evolved both in terms of quality, functioning and variety.
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