Pump Series


GMS Series

The GMS Series is designed for intermittent or medium duty service for applications in the operating ranges noted. These units are available with head and backhead jackets for temperature control, carbon graphite bushings for low viscosity liquids, silicon carbide bushings for wear resistance. For continuous duty service, or for handling viscous liquids, see heavy duty GHC pumps.

GMS Series (G Series) Rotary Gear Positive Displacement Pumps
Specifications
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
Item Size Seal
GMS1 1/2GC3-B 1.5 x 1.5 Mechanical or Packing
GMS1 1/2GF3-B 1.5 x 1.5 Mechanical or Packing
GMS1 1/2GF-B 1.5 x 1.5 Packing
GMS1 1/2GH3-B 1.5 x 1.5 Mechanical or Packing
GMS1 1/2GJ3-B 1.5 x 1.5 Mechanical or Packing
GMS1 1/2NK3-B 1.5 x 1.5 Mechanical or Packing
GMS1DC3-B 1 x 1 Mechanical or Packing
GMS1DE3 /40C70A 1 x 1 Mechanical or Packing
GMS1DE3-B 1 x 1 Mechanical or Packing
GMS2 1/2JG3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2JJ3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2JL3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2JP3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2NK3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2NM3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2NP3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2RM3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2RP3-B 2.5 x 2.5 Mechanical or Packing
GMS2 1/2RR3-B 2.5 x 2.5 Mechanical or Packing
GMS2GC3-B 2 x 2 Mechanical or Packing
GMS2GF3-B 2 x 2 Mechanical or Packing
GMS2GH3-B 2 x 2 Mechanical or Packing
GMS2GJ3-B 2 x 2 Mechanical or Packing
GMS2JG3-B 2 x 2 Mechanical or Packing
GMS2JJ3-B 2 x 2 Mechanical or Packing
GMS2JL3-B 2 x 2 Mechanical or Packing
GMS2JP3-B 2 x 2 Mechanical or Packing
GMS2NK3-B 2 x 2 Mechanical or Packing
GMS2NM3-B 2 x 2 Mechanical or Packing
GMS2NP3-B 2 x 2 Mechanical or Packing
GMS2RM3-B 2 x 2 Mechanical or Packing
GMS3JG3-B 3 x 3 Mechanical or Packing
GMS3JJ3-B 3 x 3 Mechanical or Packing
GMS3JL3-B 3 x 3 Mechanical or Packing
GMS3JP3-B 3 x 3 Mechanical or Packing
GMS3NK3-B 3 x 3 Mechanical or Packing
GMS3NM3-B 3 x 3 Mechanical or Packing
GMS3NP3-B 3 x 3 Mechanical or Packing
GMS3RM3-B 3 x 3 Mechanical or Packing
GMS3RP3-B 3 x 3 Mechanical or Packing
GMS3RR3-B 3 x 3 Mechanical or Packing
GMS3RS3-B 3 x 3 Mechanical or Packing
GMS3SR3-B 3 x 3 Mechanical or Packing
GMS3SU3-B 3 x 3 Mechanical or Packing
GMS4RM3-B 4 x 4 Mechanical or Packing
GMS4RP3-B 4 x 4 Mechanical or Packing
GMS4RR3-B 4 x 4 Mechanical or Packing
GMS4RS3-B 4 x 4 Mechanical or Packing
GMS4SR3-B 4 x 4 Mechanical or Packing
GMS4SU3-B 4 x 4 Mechanical or Packing
GMS5TU3-B 5 x 5 Mechanical or Packing
GMS6SR3-B 6 x 6 Mechanical or Packing
GMS6SU3-B 6 x 6 Mechanical or Packing
GMS6TU3-B 6 x 6 Mechanical or Packing

Use Gorman-Rupp's G.R.A.S.P. Pump Selection Program