Centrifugal charging pump is used to provide drilling liquid with a certain discharge capacity and pressure to triplex pump in order to assure of better suction performance and stabilized operation of drilling pumps under rated pumping speed. It matches 3NB-1600, 3NB-1300 and 3NB-1000 high-speed triplex pump and moderate speed triplex pump. Through over years of research and improvement,the technical performance and sealing life of the filling pump are on top of the nation.
The pump has two types of drive, electromotion and belt drive. New products can be designed and provided according to customers’ special requirements .
Main performances and parameters

Discharge capacity	200—240m2/h
Discharge head	26—28mm
Rotate speed	1450rpm, 1780rpm（60Hz）
Power of motor	45kw,55kw
Working efficiency	0.65
Dimension of inlet and outlet	DN200×150mm
Weight	1100kg