This code provides standard directions for conducting and reporting tests on displacement pumps. The object of the code is to establish rules for conducting tests on pumps to determine, under specified conditions, one or more of the following quantities: (a) Pump capacity or rate of flow (b) Power input (c) Efficiency (d) Inlet requirements Pumps covered by this code shall be defined as displacement pumps that obtain their pumping action by repeated alternate filling and emptying of volume elements.