Hydro Testing which is also known as Hydrostatic Testing is a non-destructive test procedure to examine cylinders for leaks, structural flaws, durability, and corrosion. Cylinders structure integrity is also checked in the following process. The process also checks the pressure handling strength of the cylinder. It is called Hydrotesting because the cylinder is filled with water before heavy pressure is applied to it with the help of a high-pressure pump. If the cylinder is of low capacity it will show leakage. These cylinders are discarded immediately and are not allowed to be used.

What are the steps followed during the testing?
The Hydro Testing has the following step included ensuring the cylinder is properly tested:
Valve opening and Internal Inspection
Internal cleaning and drying of cylinder
De-pressuring & Degassing of Cylinder
Ultrasonic Thickness Testing of the Cylinder Wall
Hydrostatic Stretch Testing of the Cylinder
Internal / External Cleaning and Drying of the cylinder
Checking of Tare Weight of the Cylinder
Internal / External Inspection
Fixation of the Cylinder on the Vehicle/Cascade
Providing Testing Certificate of the Cylinder