: For pumps with discharge nozzles larger than 3 inches (80 mm), head values must now be within 3% of each other in the preferred operating flow region to ensure stability when running in parallel (unless equipped with adjustable speed drives).
: The number of performance test points has increased from 6 to 9 points , improving the accuracy of the pump curve. Material Updates : api 610 12th edition pdf exclusive
, updated baseplate standards, and refined bearing housing specifications (specifically sections 6.10.2.3 to 6.10.2.5) were introduced. Vibration Limits : For pumps with discharge nozzles larger than