Qp-s Pumps

Casting :
* Top centerline discharge, self-venting casing, arranged for back pull-out.
* Fully confined gasket.
* Foot support under casing for maximum resistance to misalignment and distortion from pipe loads ASA-150 Ib flanges standard, 300 Ib optional for working pressure to 26 kgt/cm2 with 3 mm corrosion allowance.
* For maximum corrosion-erosion resistance casing is supplied without tapped openings, but gauge and drain plug openings are provided when specified.

Impeller :
* Impeller matched to casing for high efficiency and low NPSH.
* Fully open, has partial shrouds for maximum vane support without high thrust inherent in closed impellers.
* Stuffing box pressure reduced and entrance of solids prevented by back pump out vanes. Large smoothly contoured flow passages combine best slurry and solids handling ability.
* Impeller is screwed on shaft, and threads are sealed by PTH O-ring. This eliminates projecting impeller nut and exposed threads from impeller eye.
* All impellers are statically and dynamically balanced.

Stuffing Box Cover :
* Stuffing box cover encloses back of casing, and contains stuffing box chamber. The cover is fastened to frame or adapter so that a spare back pull-out assembly can be stocked completely assembled. Cover can be supplied with jacket for cooling stuffing box chamber in high temperatures services. Jacket can also be used for healing viscous or high freezing point liquids.