What is the minimum distance the anti-vortex plate must be installed above the bottom of the tank?

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Multiple Choice

What is the minimum distance the anti-vortex plate must be installed above the bottom of the tank?

Explanation:
Anti-vortex plates are used at the tank intake to break up swirling water and prevent air from being drawn into the suction as the tank level drops. Placing the plate a certain distance above the bottom keeps it out of the settled sediment while still close enough to influence the inflow and stop vortex formation. If it’s too close to the bottom, sediment can clog the plate and reduce its effectiveness; if it’s set higher, you still maintain adequate flow control but aren’t required to go any higher than necessary. The minimum distance that satisfies these needs is six inches, which balances staying above settled debris with maintaining a stable, non-vortical intake.

Anti-vortex plates are used at the tank intake to break up swirling water and prevent air from being drawn into the suction as the tank level drops. Placing the plate a certain distance above the bottom keeps it out of the settled sediment while still close enough to influence the inflow and stop vortex formation. If it’s too close to the bottom, sediment can clog the plate and reduce its effectiveness; if it’s set higher, you still maintain adequate flow control but aren’t required to go any higher than necessary. The minimum distance that satisfies these needs is six inches, which balances staying above settled debris with maintaining a stable, non-vortical intake.

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