What is the working limit design pressure for standard plumbing equipment to minimize explosion risk?

The working limit design pressure for standard plumbing equipment is typically set to 125 psi. This standard is established to ensure that plumbing systems operate safely without the risk of failure or explosion under normal operating conditions. Setting the working limit design pressure at this level allows for a significant margin above typical system operating pressures while still limiting the risk of catastrophic failures.

Using 125 psi as a guideline ensures that the plumbing equipment can withstand transient pressures and system shocks without compromising safety. It also helps to account for variations in pressure during peak usage scenarios and provides adequate support for the operational integrity of the entire plumbing system.

Regarding the other values, while some equipment may be designed for higher pressures (like 150 psi or 200 psi), these thresholds are generally meant for specific applications and may not align with the standard safety margins established for routine residential and commercial plumbing installations. Setting the design pressure too low can also lead to operational inefficiencies and increased wear and tear on systems that must frequently operate near their limits. Therefore, 125 psi is considered the most appropriate working limit to balance safety, functionality, and industry norms.