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Petrochemical producers and many other industries depend on pressure vessels to manufacture, transport, or store chemicals. Hydrostatic testing is a process used to verify the overall integrity of pressure vessels such as pipelines, plumbing, gas cylinders, boilers, and storage tanks. Hydrostatic testing is often used to qualify a piece of equipment that has been repaired or rebuilt, prior to it returning to service.

Hydrostatic testing begins with filling a component with liquid, often water, until the pressure reaches a specified level. An amount of pressure greater than the designed working pressure of the equipment is applied and held for a set timeframe, during which the equipment is examined for leaks. Specialized equipment is required to perform this type of testing.


Industry Primary Use Pressures (psi)
Chemical Pipeline, plumbing, and storage tank integrity testing and qualification 10,000 to 40,000 


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