System Volume Turnover

Definition

The sizing metric for filtration that targets passing the entire system volume (basin plus piping plus exchangers) through the filter within a set time.

The general rule is at least once every 4 hours, with 2 to 4 hour targets for high dust, heavy construction, chronic sediment, degraded fill, or critical reliability. Example: a 3,000 gallon system at a 4 hour target needs 750 gallons per hour, about 12.5 GPM, roughly 1.6 percent of an 800 GPM recirculation rate. It converts a cleanliness goal into a concrete flow rate.

Related concepts

Sidestream Filtration · Attrition Strategy

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Part of The Blueprint of Water · 🛠️ operations