Pentair Fairbanks Nijhuis 1590 Series Single Stage Vertical Inline Pumps

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Pentair Fairbanks Nijhuis 1590 Series Single Stage Vertical Inline Pumps


Fairbanks Nijhuis Vertical Inline Close Coupled Pumps are specifically designed for mounting, in any position, directly in a pipe line. The suction and discharge nozzles are located on the same centerline 180º apart. Vertical pumps significantly reduce the space required; two pumps fit in the space of one. They are easy to maintain; simply remove the cap screws and the motor and bracket assembly is easily removed from the casing without disturbing the piping.

  • Capacities to 4500 GPM (1,020 m3/hr)
  • Pressures to 370 Feet of Head (112 m)
  • Temperatures to 250F (120C)
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  • Patented Jacking Mechanism simplifies seal replacement – one person operation (Split Coupled version only).
  • Ductile Iron Casing long life with higher working pressures.
  •  Standard C-Face Motor provides low noise level pump operation (Split Coupled version only).
  • Back Pull-Out Casing includes in-line suction and discharge.
  • Case Wearing Ring prevents wear on casing and is inexpensively replaced. Impeller wear rings are optional.
  • Investment Stainless Steel, Dynamically Balanced, Enclosed Impeller keyed to the shaft extension and secured by a capscrew and washer. Gaskets are used to prevent leakage to shaft end.
  • Stainless Steel Shaft designed for minimum deflection.
  • Mechanical Seal has carbon against ceramic face for optimum hot water performance. Long life is assured with 303 SST metal parts and Buna-N flexible elastomers (outside balanced seal optional).
  • Factory Hydro Test guarantees casting and seal integrity.
  • Relief Line assures adequate venting of the seal chamber and lubrication of seal faces.
  • Smooth Suction Passage vortex breaker helps to minimize pre-rotation.
  • Double Volute minimizes side load on shaft extending mechanical seal life. Note: Single Volute also available
  • Spire supports rotating element from the bottom for stability and balance during operation (Split Coupled version only).
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