Hydrostatic Testing Services

At Serviced Fire Equipment, we elevate the standards of hydrostatic testing, a crucial process where components such as piping or pressurized containers are tested for strength and leaks using pressurized liquid. As a leading hydrostatic testing facility, we combine state-of-the-art technology with unparalleled expertise to offer comprehensive testing services.

Hydrostatic Test Markings Florida

Wide Range of Cylinders Tested

We specialize in hydrostatic testing for a diverse array of cylinders, including but not limited to:
• Scuba Tanks
• Paintball Tanks
• Medical Oxygen Tanks
• Chlorine Tanks
• Beverage Tanks
• Kegerator Tanks
• Nitrogen Tanks
• CO2 Beverage Tanks
• Self-Contained Breathing Apparatus (SCBA) Cylinders
• Propane Tanks
• Low-Pressure Aluminum Cylinders
• Compressed Gas Cylinders
• High-Pressure Aluminum Compressed Gas Cylinders
• Fiber-Reinforced High-Pressure Cylinders
• Marioff High Fog Cylinders
• CO2 Fire Extinguishers
We pride ourselves on our ability to handle almost all cylinders that carry a DOT number, ensuring versatility and inclusivity in our services.

Process of Refurbishment


Cylinders undergo a rigorous inspection by our DOT-qualified technicians to ensure they are fit for testing.

Testing Procedure

Cylinders are placed inside a water jacket and pressurized with water to measure expansion and test integrity.

Requalification Records

Successful tests are documented with requalification records, and cylinders are marked with RIN identification and the retest date.

Condemnation Process

Cylinders that fail the test are marked as "Condemned," and with the owner's permission, are rendered unable to hold pressure.

Why Choose Serviced Fire Equipment?

Expertise and Certification

As a fully licensed hydro testing facility, our team of NICET-certified technicians brings unparalleled expertise to every testing scenario.

Comprehensive Service

From arranging transportation to providing detailed inspections and additional cylinder services, we offer a holistic approach to cylinder care.

Geographical Reach

Serviced Fire Equipment extends its services to a broad geographic area, ensuring accessibility and convenience for clients in various locations.

Customer-Centric Approach

Our focus is on delivering personalized services tailored to the specific needs of each client, ensuring satisfaction and reliability.

Hydrostatic Test Markings

Hydrostatic Testing Frequency

Understanding the testing requirements of your equipment is crucial for maintaining safety and compliance. We provide guidance on testing frequency based on DOT regulations and can assist in interpreting the requirements for different types of cylinders.
Common Testing Requirements
• DOT-3AL Gas Cylinders: Test every 5 years, unlimited life.
• DOT-3HT Gas Cylinders: Test every 3 years, 24-year life.
• DOT-3AA Gas Cylinders: Test every 5 years, unlimited life (or 10 years if stamped with a star).
• Special Permit (SP) Cylinders: Specific requirements based on the permit.

Hydrostatic Testing Services

Cylinder Markings and Compliance

Our testing services ensure that your cylinders comply with U.S. and Canadian standards set by organizations like ASTM and ASME. We ensure that all cylinders are correctly marked post-testing, adhering to legal and safety standards.

Contact Us

Interested in partnering with us

Whether you are in need of hydrostatic testing or other cylinder services, Serviced Fire Equipment is just a phone call or email away. Contact us for expert service, and let us handle the intricacies of your cylinder testing and maintenance needs.

Our Water Jacket Hydrostatic Testing Process



We begin by thoroughly inspecting your cylinders for any visible damage, corrosion, or defects. After cleaning the exterior to remove contaminants, we set up the water jacket apparatus, ensuring proper instrumentation and sealing for accurate testing.


Submerging the Cylinder

Carefully lowering the cylinder into the water jacket enclosure, we ensure full submersion and secure positioning to prevent movement during testing.



Gradually introducing pressure into the water jacket, we monitor and control the pressure to reach the specified test pressure for your cylinder. During the hold period, we meticulously inspect for leaks or weaknesses in the cylinder's structure.



Conducting thorough visual inspections and leak detection tests, we assess the cylinder's exterior and structural integrity for any signs of damage or deformation.


Depressurization and Evaluation

After completing the hold period, we depressurize the system and carefully remove the cylinder for post-test evaluation. Analyzing the test results, we provide detailed recommendations and remedial actions if any defects are detected.

Servicing Fire Extinguishers in St. Petersburg Florida

Trust Serviced Fire Equipment for Your Hydrostatic Testing Needs When it comes to hydrostatic testing, trust the experts at Serviced Fire Equipment to deliver reliable, professional, and comprehensive services. With our years of experience, dedication to quality, and commitment to customer satisfaction, you can rest assured that your cylinders are in good hands.

Contact us today to schedule your water jacket hydrostatic testing and ensure the safety and compliance of your equipment. Let Serviced Fire Equipment be your partner in protecting what matters most.