B58.1-1955 (A101-55): American Standard Specifications for Deep Well Vertical Turbine Pumps (PDF)

The suggested standards are to be considered as a minimum requirement for a first-quality deep well turbine pump, but do not preclude the use of more elaborate specifications on the part of either user or manufacturer, nor is it the intent to restrict the use of any equipment not meeting the requirements of this specification should the user not consider such compliance necessary. This specification is applicable primarily to pumps that are constructed of accepted standard materials of the best quality and workmanship, and handle cold, clear water, usually from an underground well.