Roper 3800 Series 3 in. Flange Cast Iron Gear Pump, 430 GPM

3 in.
430 GPM
Max RPM:
80.00 LBS
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Roper's 3800 Series Gear Pumps offer the ultimate solution for oil field applications, handling everything from light and heavy crude oils to kerosene mixtures, condensates, and hot oil. Crafted from premium materials, these pumps are built to endure harsh conditions while ensuring quiet operation with helical gears. Plus, their bi-directional rotation adds versatility to suit various needs.

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  • Differential pressures up to 125 PSI
  • Up to 430 GPM
  • Helical gears for quiet operation
  • Multi-lip grease purged seal assembly
  • Maintenance indicator/Weep detection
  • Triple shaft seals plus sealed ball bearings
  • Over pressure relief type grease fittings
  • Bi-directional rotation


  • Series: 3800 - Positive Displacement Gear Pump
  • Model: 3843
  • Port Connection: 3 in. Flange
  • Port Arrangement: Right Angle
  • Theoretical Displacement: .43 GPR
  • Theoretical Flow at 100 RPM: 43 GPM
  • Maximum Speed: 1000 RPM
  • Maximum Flow at Maximum Speed (0 Discharge Pressure): 430 GPM (1.62 M³/min)
  • Maximum Pressure: 125 PSI (8.62 Bar)
  • Housing: Cast Iron
  • Gears: Hardened Iron
  • Shafts: Steel
  • Bearings: Sealed Ball Bearings
  • Seals: Nitrile Rubber Lip Seals
  • Maximum Temperature: 250°F (121°C)
  • Applications: Oil Field (Including Light and Heavy Crude Oils), Kerosene Mixtures, Condensates, Hot Oil


Product Manual (PDF Download)