Relief Double

A 2.5 in. double acting cylinder with a 1.25 in rod is holding load with 3000 psi in the piston?

A 2.5 in. double acting cylinder with a 1.25 in rod is holding load with 3000 psi in the piston end of the cylinder. Oil then leaks past the seals on the piston in an attempt to equalize the pressure. I no pressure relief valve is present, what could the pressure build up to?

It is not clear if the load is free to move but if pressure leaks from the cylinder, the load should force the piston backward. That adds a wrinkle to the calculation.

If the cylinder is open to a large pressure source that is supplying the 3000 psi, then you could approach 3000 psi on the back side of the cylinder if there is an adequate seal on that end.

More information is really needed to fully analyze the problem.

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