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QUICK LINKS ==>   Aluminum Tanks   LP Steel Tanks   HP Steel Tanks

                                   All Tanks   Tank Valves   Tank Accessories

 

 

What You Need To Know About Tanks

   

 

There are three types of scuba tanks that divers will generally encounter: Aluminum Tanks, Low Pressure Steel Tanks and High Pressure Steel Tanks.

 

Aluminum tanks typically cost less than steel tanks and are generally less susceptible to internal corrosion due to water inadvertently getting inside the tank.  However, aluminum tanks are more buoyant than steel tanks when empty or near empty, which typically requires the diver to use 4-5 pounds more weight than with steel tanks.

 

Steel Tanks typically cost more than aluminum tanks and are highly susceptible to internal corrosion if salt water gets inside the tank.  However, steel tanks are generally negatively buoyant, even when empty or near empty, which allows the diver to use 4-5 pounds less weight than with aluminum tanks. 

 

Steel tanks are available either in low pressure (LP) or high pressure (HP) versions.  Low Pressure Steel scuba tanks can use standard yoke style valves, but are larger than HP Steel tanks of the same capacity.  High Pressure Steel scuba tanks require a DIN tank valve and DIN regulator first stage, but are smaller than LP Steel tanks of the same capacity.

 

Yoke style valves are the most common tank valves by far.  Yoke style valves are generally found on aluminum tanks and are frequently used on LP steel tanks as well.  Yoke style valves are typically on-off valves, which simply open or close to control the flow of air from the scuba tank.  These are sometimes referred to a K-valves.

 

DIN valves are generally required on all scuba tanks with a working pressure of 3300 psi or higher.  DIN valves are also on-off valves, but have a different connection with the regulator first stage.  DIN valves have a treaded female connection, which mates with a treaded males connection on a DIN regulator first stage.  This threaded connection has the ability to handle higher tank pressures above 3300 psi safely.

 

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Material:   Aluminum Tanks   LP Steel Tanks   HP Steel Tanks

 

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