The design is based on the company's HDM (Heavy Duty Mining) technology, which uses the concept of a double-suction pump
. The thrusts produced are offset by the counter-rotating arrangement of the impellers, so these pumps run without axial thrust--giving a properly maintained pump a service life of 10 to 15 years, Andritz Ritz claims.
ITT recently unveiled the Goulds Model 3610 pump, an axially split, between-beating (BB1) double-suction pump
that is fully compliant with API 610/ISO 13709 10th Edition standards.
Flowserve will provide type CHTA main feedwater pumps, which are double casing, multistage barrel pumps; and type HDX booster pumps, which are single-stage, radially split, double-suction pumps
for the two units.