LGT24 and LGT30 Series

LGT24 Industrial Gas Compressor


Two-stage Rotary Screw Compressors are very cost- effective for handling high volumes of gas in field gathering, vapor recovery, and other applications and delivering gas at high pressures. The work is divided between two-stages and reduces the forces on rotating elements such as bearings. Low maintenance and high reliability are inherent with rotary screws because they have few moving parts. There are no valves, rings or packings to wear out or cause loss of efficiency. The two-stage LeROI screw compressor line offers the same capacity and power modulation features as the single-stage screws. Versatrol is an available option providing the end user with maximum flexibility.

Smooth operation results from no unbalanced forces and no pressure pulsation. No foundation is required. There are no piping vibrations from pressure pulsation. Direct coupled natural gas engine or electric motor drives are equally acceptable with the LGT24 and the LGT30 rotary screw. LeROI Rotary Screw Gas Compressors are available in 12 single-stage models covering a flow range of 20 to 15,000 MSCFD and horsepower from 10 to 800, and four two-stage models covering a flow of 1,000 MSCFD to 13,000 MSCFD and horsepower from 350 to 600.


  • Brake HP
    • LGT24 350 Max.
    • LGT30 575 Max.
  • Flow Range (MSCFD)
    • LGT24 2,500 Max.
    • LGT30 5,000 Max.
  • Inlet Pressure
    • 20" HG Vac. Min.*
    • 0 PSIG Max.
  • Discharge Pressure - 40*-150 PSIG (MAWP)
  • Speed Range
    • LGT24
      • 500 RPM Min.
      • 3,600 RPM Max.
    • LGT30
      • 350 RPM Min.
      • 2,400 RPM Max.

*Consult Factory for use with low vacuum inlet or discharge pressures.


Two-stage operation from 40 PSIG to 150 PSIG maximum is possible with the LGT24 and LGT30 Series oil-flooded compressors. Compressor packages are therefore simple, reliable and inexpensive.The gas  differential pressure provides oil circulation for proper lubrication. Optional oil pumps are available for applications requiring specific oil regulation. All iron or steel construction with no copper or copper alloys makes these compressors compatible with natural gas, sweet or sour.

Technical Specifications

  • Model LGT24 and LGT30
  • Rotor Dia.
    • LGT24 245 mm (9.65 inches) first stage
    • 175 mm (6.89 inches) second stage
    • LGT30 309 mm (12.17 inches) first stage
    • 245 mm (9.65 inches) second stage
  • Rotor L/D 1.65
  • Rotor Description: Each Stage: Twin Screw SRM Profile with Sealing Strips, 4 Lobe Male, 6 Lobe Female
  • Shaft Seal(s) – Mechanical*
  • Drive System:
    • Internal Helical Speed Increasing Gears
    • (AGMA 11)
    • LGT24 1.239-2.275 Gear Ratios available
    • LGT30 1.168-2.268 Gear Ratios available
    • Rotation - Facing Shaft - CW Drive Shaft
    • LGT24 2 7/8” Dia. With 3/4 Square Key
    • LGT30 2 7/8” Dia. With 3/4 Square Key
  • Materials:
    • Rotors – Ductile Iron 65-45-12
    • Castings – Ductile Iron 65-45-12/Cast Iron G3000
    • Bearings – Roller bearings on the inlet end and tapered roller bearings on the discharge end – alloy steel races, rolling elements and cages.


  • Versatrol Internal Bypass Valves: 
    • Versatrol internal bypass valves are available for efficient capacity control from 100-50% of design flow. Control can be manual with four steps or stepless with a microprocessor.
    • Control system is not included.
  • Adjustable Vi
  • Oil Pump:Integral oil pumps are available for low-pressure differential applications.


  • Gas Gathering
  • Well Head Gas Compression
  • Fuel Gas Boosting
  • Vapor Recovery
  • Inert Gas Boosting
  • Landfill Gas