The information that follows is based on an application where the potential for damaging surge conditions within a Sewage Pumping Station was determined by a surge analysis report:
Pump Non-Return Valves
The analysis has shown the pump non-return valves must be capable of matching a rate of flow decay of 2.45 m/s (based on nominal 400mm i.d. Ductile Iron pipework) to zero in 0.21 seconds. This equates..