Applications ... Fairbanks Morse VTSH . vertical turbine solids handling pumps have proven experience in pumping of solids, slurries, and sewage. These pump are specifically designed to pass solids, sludge, trash and long stringy materials. Only a single-sump set-well design eliminates the need for additional dry-sump, suction piping, dehumidification and sump pumps, thereby dramatically reducing initial construction costs - a savings from 40 to 70 percent when compared with conventional wet-pit/dry-pit designs.

VTSH pumps can be found in sewage and raw water lift stations, many unattended, which require utmost reliability and freedom from clogging and resistance to wear or other downtime maintenance. Plants demand pumps to provide sustained high performance, the best possible design to resist clogging, minimize wear, and minimum size driving motors and controls to reduce construction and operation costs. Sewage and wastewater treatment plants and industrial plants where solids handling service, sludge mixing, sludge recirculation, return sludge, activated sludge, jet aeration, trickling filter, filter backwash, and primary and secondary effluent is required are typical installations. Other installations include river intake, plant influent and storrn water pumping.

The VTSH is ideally suited for installation in the new Trench-Type Self-Cleaning Wet Well design recently introduced.

The successful application of the Fairbanks Morse VTSH pumps requires the consideration of many elements. In addition to knowing the capacity and discharge head requirements, other factors which need to be evaluated include:

• Net Positive Suction Head Available (NPSHA) and submergence
• Total pump thrust
• Maximum operating pressure
• Capacity operating range
• Horsepower required throughout the pump's operating range
• System head curve
• Sump requirements

Other considerations include:

• Parameters of the liquid being pumped
• Allowable solid size
• Type of lineshaft lubrication
• Type of lineshaft sealing
• Elevation
• Driver requirements
• Material of construction

Features... Parameters of Fairbanks Morse VTSH pumps require the units to be available in configurations to meet user needs. Fairbanks Morse meets these demands by providing VTSH pumps in IO", 16", 20", 24" and 30" nominal bowl diameters.

Impellers are of the non-clogging type designed with blunt, well-rounded leading vanes and thick hydrofoil shape to ensure passage of large solids and long stringy materials. VTSH pumps are substantially more efficient over a broad capacity range than conventional solids-handling pumps. The diffuser bowl design is such that there is no bearing below the impeller to obstruct flow into the impeller eye or on which trash could collect. The bowl is designed with two symmetrically arranged well- rounded diffuser vanes which serve to fully balance the radial hydraulic forces and eliminate the radial load of the impeller. Consequently, bending forces imposed on the shaft are virtually eliminated, resulting in long bearing life and a smooth, quiet operation.

Material of construction include cast iron bowls and impellers, and stainless steel pump shaft. Column is flanged and lineshaft is enclosed for water flushing and lubrication of bearings. The column contains a vertical splitter plate aligned with the vertical exits of the bowl vane to prevent trash from accumulating on the shaft enclosing tube.

VTSH pump design allows the entire drive system and controls to be located above the flood plane. Virtually any drive system: VHSNSS motors, variable-speed motors, wound-rotor motors, two-speed motors, magnetic and fluid couplings, steam turbines, engines, and combination electric and standby engines can be used.

Our special services ... at Fairbanks Morse we will design, research, test and manufacture VTSH pumps for special requirements. In many cases our standard pumps can be easily modified to meet these special requirements.

Our quality ... begins with total source control coupled with our investment in and commitment to highly specialized, computerized machinery. Fairbanks Morse manufactures VTSH pumps that must meet the exacting standard of our design engineers.

Our commitment ... at Fairbanks Morse is based on our longevity, distinctive products, market leadership, and customer service and is the direct result of the quality and dedication of our personnel. Our VTSH pumps are machined, built, and tested by our skilled shop personnel who average over 23 years of experience. Working as a team, our people continually explore new ways to better serve our customers. Product quality, dependability, and innovation are all part of the Fairbanks Morse commitment to excellence.

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