Fire Extinguishing Cylinders

Fire suppression systems and portable fire extinguishers (powder or CO2) are designed for dependability as life safety equipment and engineered for reliability. These kinds of fire protection cylinders must be maintained routinely to ensure that your emergency situations are without incident.


Routine testing of your fire extinguishing cylinders is required to ensure that the tank is qualified as  "compliant" with the Department of Transportation and able to be filled in accordance with the Code of Federal Regulation and the National Fire Prevention Association. Hydrostatic Testing of your cylinder is mandatory between 5 and 12 years by a licensed DOT Hydrostatic Testing Facility.


Cylinder Testing Services, LLC has been hydrostatically testing fire protection cylinders for over three decades. As a leader in the testing industry, we test extinguishing cylinders to verify that the tank can hold the air pressure it was designed for.


A visual inspection of the tank is performed in our facility to check for thread imperfections including metal loss, galling, corrosion, cracking and abuse according to the Compressed Gas Association. A hydrostatic test of the tank is then performed by our personnel to "qualify" the cylinder as  "able to ensure the integrity of the manufacturer's pressurization requirements".


Once this testing is completed, our RIN (Re-qualifier's Identification Number) is stamped into the cylinder and this "qualification" is generally good until the next hydrostatic test date is required.