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SR Alloy Centrifugal Mag-Drive Seal-less Pumps

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Series SR
Warrender Series SR alloy centrifugal Mag-drive pumps provide the advantages of a heavy-duty seal-less process pump in a compact, cost effective design. SR pumps are equipped with zero leakage magnetic couplings to meet the latest toxic emissions regulations. The absence of mechanical seals eliminates costly pump maintenance, lost production time and process contamination.


  • Seal-less magnetic drive coupling
  • Rugged alloy casing and pump components
  • Heavy duty alloy containment shell
  • High efficiency enclosed impeller design
  • Silicon carbide sleeve vs. carbon journal bearings with intermittent dry-run capability
  • High torque magnets suitable for direct starting motors
  • Close-coupled NEMA motor frame or bearing pedestals

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Technical Data
  • Flow: 5-150 GPM (1.1-34 m³/H)
  • Head: To 135 Feet (41.15 m)
  • Power Rating: 1/2 to 7.5 HP
  • Temperature Ratings:
    • Standard Design (240°F)
    • High Temp. Design (450°F)
    • Sub-Zero Temp. Design (0°F)
  • Pressure ratings: 150 PSI to 300 PSI (MAWP)* (*depending on operating temperature)
  • SS-316 stainless steel, Hastelloy-C276

chartSelection Chart

3500 RPM PDF3500 RPM Curves

1750 RPM Curves

drawingDimensional Drawing

IOM Manual

SR Brochure

Data Sheet

Replacement Parts:
  • Rear Wet End Kits, Shaft, Sleeve & Thrust Bearings, Impeller & Casing wear Rings, Internal Magnets, Casing Gaskets, Power/ Bearing Frame Components.