Definition - What does Pump Capacity mean?
Pump capacity is a term used to describe the maximum flow rate through a pump at its designed conditions. It is a measurement usually given in gallons per minute (gpm) or cubic meters per hour (m3/h). This measurement is used in trenchless construction projects to specify the size of a slurry pump or associated equipment on the tunnel boring or horizontal drilling machine.
Trenchlesspedia explains Pump Capacity
Pump capacity is a limiting factor and therefore pump sizes must be specified to be able to cope with the flow rates required on a specific project. Slurry pumps need to be able to supply a constant flow of slurry to the drilling head according to the geological conditions. If the supply is too low, the drilling efficiency will be reduced and the drilling operation will take much longer. However, if the supply is too high, it may cause damage to the drilling head due to the increased fluid pressure. An oversized pump will also waste energy, and therefore, money so it is ideal to size the pump capacity to match the project conditions.