What is a common indicator of a successful draft from a static water source?

A common indicator of a successful draft from a static water source is consistent water pressure. This indicates that the pump is effectively drawing water from the source without interruption. When the water pressure remains steady during the drafting process, it suggests that the pump is maintaining an adequate supply and that the water source is capable of providing the necessary flow.

Consistent water pressure also shows that there are no significant leaks in the suction line or issues with the pump itself, which could lead to fluctuations in pressure. Maintaining consistent pressure is crucial for the operational effectiveness of fire suppression efforts when utilizing static water sources.

While the other indicators may provide some information about the drafting process, they do not directly signify the success of the draft in the same way that consistent water pressure does. For instance, bubbles on the surface might indicate air is being drawn into the system, while visible debris is more about the quality of the water rather than the effectiveness of the draft itself. Noise response could suggest problems or indicate the pump is working, but without stable pressure, the draft could still be unsuccessful. Hence, consistent water pressure stands out as the most definitive indicator of a successful draft from a static water source.