What is the pressure rating for a system noted in relation to vacuum relief?

In the context of vacuum relief systems, the pressure rating is essential because it indicates the maximum pressure the system can safely handle without risking failure. A system with a vacuum relief valve typically requires a pressure rating that ensures proper functionality while preventing negative pressure scenarios.

The correct choice of 200 psi is significant because it represents a balance between safety and operational effectiveness when dealing with fluid systems that may experience fluctuating pressures. A rating of 200 psi allows for adequate leeway in most applications, ensuring that the vacuum relief system can perform its function of protecting piping and equipment against collapse due to vacuum conditions. Moreover, this rating is standard in many plumbing applications, making it widely applicable and reliable for various installations.

A rating of 100 psi might be too low for certain applications, while 300 psi and 400 psi would likely be over-engineered for typical scenarios where vacuum relief is necessary, leading to added costs without a corresponding benefit in safety or functionality. The selection of a 200 psi rating is thus an optimal choice for a range of plumbing systems requiring vacuum relief.