What is the minimum psi required for a hydrostatic test?

The minimum psi required for a hydrostatic test is typically set at 150 psi because this level ensures that the pipe or system can be thoroughly tested under pressure to detect leaks and confirm integrity. This pressure level is generally standardized to provide a safety margin above the normal operating pressure, allowing for a reliable assessment of the system's performance.

Conducting a hydrostatic test at 150 psi helps to ensure that any potential weaknesses in the pipe or fittings can be identified before they lead to failures in the system. Additionally, by adhering to this standardized pressure threshold, water distribution systems can comply with regulations that aim to guarantee the safety and reliability of water infrastructure. This practice also supports long-term maintenance goals by ensuring that the materials and joints used can withstand pressure conditions higher than usual operational stresses.

Other options, such as 100 psi, 125 psi, or 175 psi, do not align with the commonly accepted minimum for hydrostatic testing, which is why 150 psi is regarded as the correct standard.