Hydrostatic testing checks what condition in the cylinder?

• A. The integrity of the cylinder to prevent leaks or ruptures.
• B. Paint finish quality.
• C. Hose flexibility.
• D. Color of discharge spray.

Answer: (A)

The main idea is assessing the cylinder’s ability to contain pressure without failing. In hydrostatic testing, the cylinder is filled with water and pressurized to a specified level to reveal any weaknesses. Because water is incompressible and easy to observe for leaks, this test shows if there are leaks, thinning walls, cracks, or other defects that could lead to a leak or a rupture under service pressure. If no leaks or deformations appear, the cylinder is considered structurally sound for use. Cosmetic factors like the paint finish, hose flexibility, or the color of the discharge spray don’t affect safety and aren’t determined by this test.