Sand cast / Investment cast, twisted vane impeller of duplex stainless steel (CD4MCu) for better     erosion capability.

Seal housing controls vapor build-up and ensures adequate flow conditions to remove heat     effectively. Incorporates many different seal designs with sufficient radial clearance.

Oil seals at both ends of bearing housing.

Bearings with L-10 life of 2 years as minimum designed criteria.

Corrosion allowance of 3 mm.

Shaft