At what pressure are pumps hydrostatically tested?

Hydrostatic testing is a crucial procedure used to ensure the integrity and safety of pumps by checking for leaks and verifying the strength of the pump materials under pressure. The correct pressure for hydrostatic testing is typically set at 250 psi for a duration of 3 minutes. This standard is designed to effectively challenge the pump's construction and materials, simulating operating conditions while significantly exceeding normal working pressures to identify any weaknesses.

Testing at this specific pressure and time frame helps to ensure that any flaws that might not be evident during regular use are detected. If the pump can sustain this pressure for the allotted time without leaking or failing, it indicates that the pump is likely safe and reliable for use in the field.

Other pressure and duration combinations, such as 150 psi for 5 minutes or 300 psi for 1 minute, do not align with standard practices, as they may either be insufficient to identify potential failures or may not provide a realistic pressure condition reflective of actual operational stresses. Thus, 250 psi for 3 minutes ensures a proper assessment of the pump's integrity.