L4NG Low Pressure range
L4 Twin Screw Pump range
The L4 range are twin-screw, double-volute, self-priming positive displacement pumps.
As each spindle is individually driven the screws are not in contact - hence they are suitable for pumping aggressive / non-aggressive, abrasive / non-abrasive low to high-viscosity fluids with or without lubrication properties.
Rugged heavy duty designs to API 675 for demanding oil and gas applications.
See also the Multi-Phase pump range for handling mixed liquid / gas fluids
Advantages of the Leistritz twin screw pump range:-
Spindles (shaft/rotors) manufactured in one piece > Low rotor deflection and non-contacting design
Arrow-toothed gears > Reduced noise level and low-maintenance
Replaceable insert > Low-maintenance
Special spindle geometry > Minimized pulsation and optimized NPSH value
Wide range of shaft seals > Customer-specific seals (single-acting, double-acting, API plans)
Capacity Max. 5,000 m³/h (755.300 bpd)
Differential pressure Max. 16 bar (222 psi)
Viscosity Max. 150,000 cSt
Operating temperature Max. 350° C (662° F)
- Cased pumps with replaceable insert
- Flange-mounting in accordance with DIN or ANSI available
- Welded version with a variety of flange arrangements and heating system options
- Single-acting or double-acting mechanical seals available (as well as cartridge seals)
- Suitable for use for multi-phase applications to a limited extent - gas contents up to 30 %
- Pumping of non-Newtonian fluids
- Stainless steel version available
- External heating available
- High temperature version available
L4MG Medium Pressure Range
Capacity Max. 3,900 m³/h (589.100 bpd)
Differential pressure Max. 40 bar (580 psi)
Viscosity Max. 150,000 cSt
Operating temperature Max. 350° C (662° F)
- Cased pumps with replaceable insert
- Flange-mounting in accordance with DIN or ANSI available
- Welded version with a variety of flange arrangements and heating system options
- Single-acting or double-acting mechanical seals available (as well as cartridge seals)
- Suitable for multi-phase applications to a limited extent - gas contents up to 30 %
- Pumping of non-Newtonian fluids
- Stainless steel version available
- External heating available
- High temperature version available
L4HG High Pressure range
Capacity Max. 2,000 m³/h (302.100 bpd)
Differential pressure Max. 150 bar (2.175 psi)
Viscosity Max. 150,000 cSt
Operating temperature Max. 350° C (662° F)
- Cased pumps with replaceable insert
- Flange-mounting in accordance with DIN or ANSI available
- Welded version with a variety of flange arrangements and heating system options
- Single-acting or double-acting mechanical seals available (as well as cartridge seals)
- Suitable for multi-phase applications to a limited extent - gas contents up to 30 %
- Pumping of non-Newtonian fluids
- Stainless steel version available
- External heating available
- High temperature version available
The Compact L4NC & L4NO Range
- Compact one-piece housings > Cost and weight reduction
- Designs to API 675, ideal for low weight, minimal space offshore applications
- Special geometries > High flow rates
- Optimized sizes > Finer quantity gradations
- Spindles (shaft/rotors) manufactured in one piece > Low rotor deflection and low bearing load
- Gears & ball bearings oil-lubricated > Longer service life and maintenance intervals
L4NC technical data
Capacity Max. 5,000 m³/h (755.300 bpd)
Differential pressure Max. 16 bar (232 psi)
Viscosity Max. 10,000 cSt
Operating temperature Max. 100° C (212° F)
With its compact design, the newly developed L4NC can be used in a wide range of areas of the oil and gas industry, at tank farms, in shipbuilding and offshore technology, and in the chemical and petrochemical industry.
- Helical toothed gears
- API 676 compliant
- Pressure range up to 25 bar
- Solutions adapted precisely for the operating requirements thanks to a wide variety of spindle diameters and pitches
L4NO technical data
Capacity Max. 1,250 m³/h (188.700 bpd)
Differential pressure Max. 16 bar (222 psi)
Viscosity Max. 15,000 cSt
Operating temperature Max. 180° C (356° F)
