Giant CO2 offers hydrostatic testing and certification. All of our hydro-testing is performed by Orange County Cylinder Requalification (OCCR) and is available for residential, commercial, and industrial tanks.

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A hydrostatic test, or "hydro-test," verifies that a tank is in good condition and able to withstand the pressure of holding compressed gas. Whether for personal, commercial, or industrial use, the California DOT (Department of Transportation) requires that all aluminum and steel cylinders used for compressed gas pass a hydrostatic test every five years. If a tank's hydrotest date is past the five years, it is illegal to refill the bottle until it has been tested. To check if your tank is due for recertification, check the date stamped near its neck. Requalification is also recommended anytime that the cylinder's integrity is suspect (such as after it has been dropped, exposed to excessive heat, left unused for a few years, or has excessive rust or corrosion).

 

If your tank is out of hydro-date and needs hydro-testing, we provide hydro-test service at $35 per tank. We only provide hydro-test service for small cylinders up to 20lb size that we can also fill. We provide fills for carbon dioxide, nitrogen and blended CO2/N2 gas. Hydro-test service takes 1-2 weeks. You will need to leave your tank with us for this service. If your tank passes the test, we’ll requalify and re-stamp it, certifying it for another five years. Once it has been requalified, it is ready to be filled. We will fill it with CO2, Nitrogen, or Beer Gas before returning it to you. The hydro-test cost is in addition to the refill. Gas prices vary based on gas and size of tank. Please see our "Tank Refills" webpage for pricing information. Payment is required upfront. We accept credit cards only, no cash.