The ULTRAChem pump uses a two piece impeller drive assembly that can easily be modified in the field.  A versatile lock-fit design presses the impeller vanes to the impeller drive assembly.  The removable impeller is shown in blue. 

The enclosed impeller is injection molded from carbon fiber reinforced ETFE for superior corrosion resistance and mechanical strength.  The carbon fiber is used for mechanical strength in the areas of the pump that strength is required. 

The impeller drive assembly is a two part mold.  The impeller side is carbon filled with the rear portion that covers the magnets of pure ETFE.  The pure ETFE is used for corrosion protection of the magnets.  With some solutions, carbon fiber can wick solution.  This would not cause a mechanical strength failure but could cause magnet corrosion -- this is why a combination of carbon filled and pure material is used.  The carbon filled area is shown in black - the pure in white.

Shaft and Bushing Design

The shaft and bushings are constructed of sintered silicon carbide for strength and abrasion resistance.  Dual bushings are inserted into the impeller drive assembly.  The dual bushings distribute the radial loading over the length of the shaft and the self-aligning design avoid premature wear caused by misalignment.  The geometry of the shaft minimizes stress concentration.

Barrier Assembly

The barrier provides for the sealing of the rear of the pump, the area that the magnetic force passed through and support for the shaft and impeller.  The barrier is manufactured as a two piece of high strength vinyl ester (fiberglass) and carbon filled ETFE lining for corrosion resistance.  The pieces are bonded to prevent separations that might occur under low suction pressure conditions.  The internal o-ring utilizes the liner's strength and internal pressure for a leak-free seal.  

Thrust Rings

Thrust rings provide surfaces to absorb the loads caused by discharge pressure and suction pressure forces on the impeller.  The rings are silicon carbide (rear) and Fluorosint® (front).  The impeller is hydraulically balanced to reduce the forces generated and extend the life of the thrust rings.

Casing

High strength ductile iron casing is bonded with pure ETFE (Tefzel®) lining.  Casings are center suction and top center discharge meeting ANSI dimensional standards.  A casing drain is standard.  The usage of the modified concentric volute provides for lower radial forces on the impeller at high, low and mid-range flow conditions for the pump.  Epoxy painted exterior surfaces for casing provide corrosion protection from exterior environment.

Motor Adapter - Drive Magnet

Heavy duty ductile iron motor adapter is designed to support pump and connection to standard NEMA or IEC motors.  Epoxy painted for corrosion resistance.  Drive magnet uses rare earth neodymium boron iron magnets for maximum power.  Motor adapter is removable for simple magnet hub adjustments.