What issue can arise if tank vents are not open during a quick fill operation?

When tank vents are not open during a quick fill operation, a dramatic pressure failure of the tank can occur. This situation arises because the filling process creates a difference in pressure inside the tank compared to the atmospheric pressure outside. If the vents are closed, air cannot escape from the tank as it fills with water. This can create a vacuum effect, leading to internal stress on the tank structure. In severe cases, the tank can become compromised or fail due to the inability to equalize the pressure, potentially causing structural damage.

Maintaining proper venting during quick fill operations is crucial for safe and efficient water transfer, preventing any dangerous pressure discrepancies that could lead to tank failure.