API 7K JDSB series centrifugal sand pump includes virtually all of the features of the JDSB series pumps 1. Usage and Application Range JDSB series centrifugal sand pump includes virtually all of the features of the JDSB series pumps.JDSB series pumps are more compact in design and can be adapted for hydraulic motor drive.These features make .JDSB series pump ideal for use in applications such as oilfield frac trucks as well as blending and pump charging for water well