NPP Series High Head Dewatering Pump

The ahlstar product line offers a extensive variety of hydraulic sizes to guarantee minimal power intake. 

Pump hydraulics, casings and impellers are designed to optimize fluid handling abilties. shares are pumped like water. debris in sludges do no longer collect inside the pump, or slurries are efficaciously channeled in order not to cause wear.

The back vanes of the impeller keep  the area between the impeller and the  casing cover clean, and reduce the  axial load on the bearings. Balance holes in the impeller are used  to stabilize the pressure in the seal  chamber. The balance holes can be  plugged to optimize the shaft seal  environment, should the application  demand it.

Capacities 2,000 m 3 /h / 8,800 USgpm

Heads 90 m / 295 ft

Temperatures 180°C / 356°F

Frequencies 50 or 60 Hz

Pressures 16 bar / 230 psi depending on material and size

NPP/NPT Hydraulic Design Non-clogging design passes big

particles and long fibers, e.g. plastic stripes.Specially designed vane edges stay clean.Front vanes with sideplate cutting grooves keep gap clean.Back vanes prohibit particles from entering the seal cavity and balance axial forces.

Liquids:sludges, waste waters, effluents