U Series Unlined Slurry Pump


The U Series has the same hydraulic performance profiles of their lined counterparts in the S and L Series, and can be applied on existing lined slurry pump installations using a conversion kit.

U Series Profile

Discharge diameters 2” to 10” (50mm to 250mm)

Heads through 240ft (73m)

Flow-rates through 6,000gpm (1,350m3/h)

Casing pressure tolerance 300psig (2,020kPa)

U Series Features

Wetted Parts

Impellers – uses the same high chrome impellers as the lined pump series for even greater interchangeability – pump out vanes on rear and front (on closed impellers) reduce recirculation within pump – optional castings of straight or semi-Francis vanes (from 2 to 6 vanes on certain sizes) offer wider hydraulic options in single sizes

Bowl/Casing – the unlined casing is extra thick high-chrome alloy material hardened to over 650 Brinnell. The suction side is cast in a contoured shape to mate with the impeller eyes to increase efficiency and reduce recirculation in the casing.


Expeller (Centrifugal Seal) – no external sealing water required where applicable
Stuffing Box – flushed gland sealing with braided packing and a lantern ring
Mechanical Seals

Bearing Assembly

Cartridge-style bearing housing allows for removal from pump and assembly in controlled environment

Oversized shaft diameters and reduced overhang in the wet-end contribute to long life and reliability in the field</p

Interchangeable with Warman® AHU® and MU® Series pumps.

Selected Applications
  • sugar beets
  • coarse sand
  • coarse tailings
  • dredging
  • phosphate matrix
  • minerals concentrate
  • bottom/fly ash
  • lime grinding
  • oil sands
  • Mineral Sands
  • Fine Tailings
  • Phosphoric Acid
  • Coal
  • Flotation
  • Process Chemical
  • Pulp And Paper
  • FGD
  • Wastewater