BS EN 17038-4:2023 Pumps. Methods of qualification of the Energy Efficiency Index for rotodynamic pump units. Testing and calculation of energy efficiency index (EEI) of submersible multistage pump units
1970BS EN 17038-4:2023 Pumps. Methods of qualification of the Energy Efficiency Index for rotodynamic pump units. Testing and calculation of energy efficiency index (EEI) of submersible multistage pump units