- Designed for intermittent or medium-duty applications.
- Available with jacketed head and backhead for temperature control.
- Carbon graphite bushings ideal for low-viscosity fluids.
- Silicon carbide bushings provide excellent wear resistance.
- Optional configurations for thermal-sensitive processes.
| Brand | Gorman-Rupp |
| Size | 1″ (25 mm), 1-1/2″ (40 mm), 2″ (50 mm), 2-1/2″ (60 mm), 3″ (80 mm), 4″ (100 mm), 5″ (125 mm), 6″ (150 mm) |
| Max Capacity | 600 GPM (38 lps) |
| Max Viscosity | 250000 SSU (53925 cST) |
| Max Pressure | 150 PSI (11 BAR) |
| Min Temperature | -60 F (-51 C) |
| Max Temperature | 450 F (232 C) |
| Materials of Construction | Cast Iron |
Some Models
| Item | Size | Casing | Impeller / Rotor | Drive | Flange | Seal |
| GMS1DC3-B | 1 x 1 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS1DE3 /40C70A | 1 x 1 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS1DE3-B | 1 x 1 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS1 1/2GC3-B | 1.5 x 1.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS1 1/2GF-B | 1.5 x 1.5 | Cast Iron | Ductile Iron | Basic | ASA | Packing |
| GMS1 1/2GF3-B | 1.5 x 1.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS1 1/2GH3-B | 1.5 x 1.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS1 1/2GJ3-B | 1.5 x 1.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS1 1/2NK3-B | 1.5 x 1.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2GC3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2GF3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2GH3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2GJ3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2JG3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2JJ3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2JL3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2JP3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2NK3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2NM3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2NP3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2RM3-B | 2 x 2 | Cast Iron | Ductile Iron | Basic | ANSI | Mechanical or Packing |
| GMS2 1/2JG3-B | 2.5 x 2.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2 1/2JJ3-B | 2.5 x 2.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2 1/2JL3-B | 2.5 x 2.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
| GMS2 1/2JP3-B | 2.5 x 2.5 | Cast Iron | Ductile Iron | Basic | NPT | Mechanical or Packing |
The Gorman-Rupp GMS Series Rotary Gear Pumps are engineered for medium-duty and intermittent service, offering reliable performance in compact and space-saving designs. These pumps are particularly suitable for systems requiring temperature management and customized bushing materials.
Key features include:
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Optional jacketed head and backhead: Enable precise temperature control during operation, ideal for applications involving heat-sensitive or temperature-critical fluids.
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Carbon graphite bushings: Optimized for low-viscosity liquid handling, providing smooth and efficient operation.
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Silicon carbide bushings: Offer exceptional wear resistance in more abrasive environments, extending pump life and minimizing maintenance.
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Compact rotary gear configuration: Simplifies installation, especially in OEM and compact system applications.
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Moderate-duty performance: Well-suited for transfer of oils, lubricants, light chemicals, and other fluids in intermittent service cycles.
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Upgrade options available: For continuous-duty or more demanding tasks, the Gorman-Rupp GHC Series is recommended.
Whether for process control, chemical dosing, or OEM fluid handling, the GMS Series provides a reliable gear pump solution with customizable thermal features.
