Determining how long your scuba tank will last
Most scuba diving tanks are good for approximately 2000 psi or 133 bar of compressed air. This is an average number and your mileage may vary depending on the quality of the compressed air, how often you use your scuba tank, and other factors.
Checking the visual inspection
According to Scuba Diving, the first thing you should do is a visual inspection of the tank. You’re looking for anything that could cause leaks, like dents or cracks in the metal. If you see anything that looks damaged, don’t use the tank.
Checking the hydrostatic test
The hydrostatic test is the best way to know how long your scuba tank will last.
The test checks for any metal fatigue or degradation that could cause the tank to rupture. All scuba tanks have a date when they were manufactured, and most have a date when they were last tested.
The test is good for five years from the date it was performed, so even if your tank is old, as long as it has been tested within the last five years, it should be safe to use.
To hydrostatically test a scuba tank, it must be filled with water and pressurized to three times its working pressure. This tests the metal of the cylinder to ensure that it can withstand the pressure of being underwater.
If the cylinder passes the hydrostatic test, it will be inspected for any visual damage and then given a stamp of approval.
Tips to make your scuba tank last longer
diving tanks are filled with compressed air, which helps you breathe underwater. Most diving tanks will last around 40 minutes to an hour on a single use. However, there are ways to make your diving tank last longer.
Use a regulator cover
When not in use, it’s important to protect your regulator first stage by using a regulator cover. A good quality cover will help keep dirt and sand out of the moving parts, as well as preventing the delicate internal o-rings from drying out.
Don’t store your tanks in direct sunlight
Storing your tanks in direct sunlight can cause the pressure in your tanks to rise, which can be dangerous. Always store them in a cool, shaded area to keep the pressure stable.
It’s also important to keep your tanks filled to the proper pressure. Under-filled tanks can rust and corrode, while over-filled tanks can burst. Check the pressure in your tanks regularly with a gauge, and always fill or empty them as needed.
Tanks should also be inspected regularly for cracks, dents, or other damage. Any damage should be repaired before using the tank again.
Keep an eye on the O-rings
O-rings are one of the most likely parts of your scuba tank to need replacing, so it’s important to check them regularly and keep them in good condition. These rubber seals are located in several places on your scuba tank, including the valve and the connection between the tank and regulator. O-rings need to be replaced when they show signs of wear, such as cracks or cuts, or if they become brittle.