Davco parallel plate separators (PPS) range in capacity from 15 gallons per minute (gpm) to several million gallons per day, using multiple units. Our PPS plates are inclined at a 60-degree angle to enhance rapid settling. Typical hydraulic loading rates vary from 0.25 gallons per minute per square foot effective area for light hydroxide type precipitates to 0.5 gallons per minute per square foot effective area for surface water clarification.