Cracking Pressure

Cracking Pressure

Glossary Right Side Image
Animation showing what the cracking pressure of a relief valve looks like on a gear pump
Classification
Definition

The pressure at which the relief valve begins to open and bypass liquid.


Calculating: This value can be given by the customer or established at 10-15% above the maximum differential pressure for pumps with internal relief valves or the maximum discharge pressure for pumps with return-to-tank valves or in-line system valves.

What is cracking pressure?

Cracking pressure is the pressure level at which a pump relief valve begins to open and bypass liquid.

Animation showing what the cracking pressure of a relief valve looks like on a gear pump