What is the minimum pressure at a sillcock?

The minimum pressure at a sillcock is set at 10 psi to ensure adequate water flow and proper functionality in various applications. A pressure of 10 psi is sufficient for most household needs, allowing for reliable operation without significant pressure loss, which can lead to an ineffective water supply. Sillcocks must provide enough pressure to ensure that water can reach hoses or irrigation systems effectively, especially when used outdoors for gardening or cleaning tasks.

Maintaining this minimum pressure level helps in preventing issues like backflow or insufficient flow rates that could lead to inconvenience. It's important for plumbing systems to function within the recommended parameters to ensure longevity and efficiency in water distribution. Higher or lower pressures could either exacerbate structural stress on the plumbing or lead to inefficient water delivery, making 10 psi the practical and optimal standard.