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American Marsh ANSI Process Pumps

American Marsh OSD ANSI Process Pumps

SKU: 97



American Marsh OSD ANSI pumps are used in harsh process applications in a variety of industrial pump markets. The OSD series ANSI B73.1 pumps feature heavy duty castings, oversized shafts, oil lubrication, single row inboard and double row outboard bearings, optional stuffing box cooling jacket, outboard bearing micromillimeter impeller adjustment and choice of optional metallurgies.  Commercial pump applications include: Boiler feed pumps, transfer pumps, and condensate return pumps.  Industrial pump applications include: Propane pumps, butane pumps, crude oil pumps, acid pumps, gasoline pumps, naphtha pumps, organic fluid pumps, petrochemical pumps, black liquor pumps, ammonia pumps, and cargo transfer pumps.

Performance Characteristics:

  • Capacities to: 7,400 GPM
  • Heads to: 985 Feet
  • Temperatures to: 500 F (260 C)
  • Speed ranges: 3600 to 1200 RPM

Features & Benefits:

  • Back pull-out to reduce maintenance down time. Meets ANSI B73.1 dimensional standards.
  • Packed or mechanically sealed stuffing box options for aggressive pumping applications.
  • Micromillimeter thrust bearing adjustment to quickly dial back factory running tolerances.
  • Optional bearing and stuffing box cooling jackets for higher temperatures.
  • Oil lubricated bearing housing for superior cooling and extended bearing life.
  • Available standard in Cast Steel/Cast Steel fitted or other alloy for pump application versatility.
  • High efficiency reverse vane pump impellers designed to handle process fluids.
  • 150 lb. ANSI flange suction/discharge connections with centerline discharge and cast integral foot on casing for support. Optional 300 lb. flanges available.
  • Wide variety of stuffing boxes to meet application requirements.
  • Single row inboard bearings for rigid shaft support.
  • Bearing isolators to keep bearing housing clean and free of contaminents.
  • Sleeved or solid shaft to minimize deflection at stuffing box.



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