Minimum design pumping rate required to deliver effluent in a timely fashion to gravity system and to pressurize a pressure manifold or LPP laterals.
The flow rate is the amount of air or other gas that can be passed through a pump, measured at or near atmospheric pressure. On diaphragm and rotary vane pumps, the flow rate falls off under vacuum, dropping to zero at the ultimate vacuum. Since vacuum pumps operate at a vacuum and not typically at atmospheric pressure, the flow curve gives a truer indication of pump performance under real life conditions. Hysteresis: As used in vacuum controllers, the acceptable range of pressure around the target value before the solenoid valve reopens. This is analogous to the way a thermostat operates to control temperature. Some hysteresis is necessary in a conventional vacuum controller/solenoid valve arrangement to avoid continuous opening and closing of the solenoid valve. Inlet catchpot: A flask mounted at the inlet of a vacuum pump to help protect the pump from particles that might come from the application. It also collects any liquids that may have condensed in the vacuum line that could impair performance. Medium vacuum: See fine vacuum.
The amount of water which will pass through during a given period of time. Drippers, microsprinklers, filters, valves, pressure regulators and any other devise which has water flow through it will have a flow rate.