PD ISO/TR 19688:2019 PDF

What is PD ISO/TR 19688 - Rotodynamic pumps about?

PD ISO/TR 19688 discusses Rotodynamic pumps. Rotodynamic pumps A pump is a mechanical device generally used for raising liquid from a lower level to a higher one. This is achieved by creating low pressure at the inlet and high pressure at the outlet of the pump. PD ISO/TR 19688 describes hydraulic performance tests (including cavitation tests) using a small size pump (centrifugal, mixed flow or axial pump, hereinafter referred to as a “model pump”). PD ISO/TR 19688 is used for pump acceptance tests with a geometrically similar model pump to guarantee the performance of a large size pump manufactured for practical use (hereinafter, a “prototype pump”). PD ISO/TR 19688 however does not preclude a temporary assembly inspection or other tests on the prototype pump. Moreover, it is preferable to conduct the tests with prototype pumps unless-

The capacity of the pump, namely its flow rate and/or its power input, is beyond the limitations of the test facility, though it is difficult to set a criterion for carrying out a model pump test instead of the prototype pump test in terms of the volume rate of flow or the power input A part of the pump is to be constructed by concrete walls and reproduction of the whole assembly is imprac...