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Cylinder Hydro Test Centre
Cylinder Hydrostatic Testing
  • In-house CCOE approved Hydrostatic Cylinder Testing Facility
  • Cylinder cleaning as necessary

What is Hydrostatic Testing and why is it important?
Hydrostatic Testing is a nondestructive test procedure used to check cylinders for leaks, structural flaws, durability, and corrosion. It is used to check a cylinder’s structural integrity. Testing consists of enclosing a cylinder filled with water inside a test jacket filled with water. Pressure is then applied internally to the cylinder, causing the cylinder to expand. The total and permanent volumetric expansions of the cylinder are determined by measuring the amount of water displaced by the expansion of the cylinder when under pressure and after the pressure has been released. An external and internal visual inspection of the cylinder is also performed, along with a dead-ring test for steel cylinders.

The Service Center performs in-house Hydrostatic Testing and Cylinder Repairs
In addition to filling oxygen cylinders, The Service Center is proud to offer in-house hydrostatic testing/requalification of cylinders and cylinder repairs. This is unique to the industry since most cylinder fillers currently outsource hydrostatic testing/requalification and cylinder repairs to a third party. We have seen and heard of inherent problems with this standard industry outsourcing approach for hydrostatic testing and cylinder repairs.

Current industry problems resulting from cylinder fillers outsourcing hydrostatic testing

At The Service Center, we feel that our customers are best served by us offering a complete line of cylinder services, all of which are performed in-house. By doing this, we are able to fill your cylinders and deliver back the exact quantity that we picked up.

Benefits of using The Service Center to perform hydrostatic testing of cylinders and cylinder repairs
  • We perform CCOE approved hydrostatic testing in-house
  • Your cylinders are always in our control
  • You will receive clean cylinders – Guaranteed!
  • Cylinder Exterior Painting
  • Internal Shot Blasting (ISB)
    Internal Shot Blasting is the most effective method of removing rust and corrosion from inside steel cylinders. Internal Shot Blasting is more efficient method than cylinder tumbling.

We Offer Test for
  • CNG
  • H2
  • Ar
  • O2
  • N2
  • CO2
CNG Cylinder Testing
CNG cylinders are required to be tested periodically every 5 years. Following are the aspects of cylinder testing at Verni Gastech Pvt. Ltd.:
  • Valve opening and Internal Inspection.
  • Internal cleaning of cylinders.
  • Cylinder Wall Thickness measurement by Ultrasonic Thickness Tester.
  • Water Jacket and Direct Expansion method for Hydrostatic stretch testing.
  • Cylinder Drying, External Cleaning and Painting.
  • Test mark sign is used after testing the fitness of the cylinder.
  • De-pressuring & Degassing of Cylinders
  • Checking of Tare Weight
  • External Inspection ( thickness, bulge, burn , dents, dig )
  • Internal Inspection
  • Hydrostatic Test
  • Fixing of Valves
  • Assemble & Disassemble of CNG Cascades
  • Deliver the cylinder with Certificate.

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