Leistritz L3ME-090/152 IFOGOO-W Triple Screw Pump Cartridge

Leistritz L3ME-090/152 IFOGOO-W Triple Screw Pump Cartridge

The Leistritz L3ME-090/152 IFOGOO-W Triple Screw Pump Cartridge is a quality, factory fresh positive displacement pumping element specially designed for severe maritime and industrial fluid handling applications. This replacement cartridge is a self-contained, three-spindle, single-volute item that drops directly into the pump casing to restore factory-spec volumetric efficiency in less time than a total overhaul.

This cartridge combines hydro dynamically balanced nitrided steel rotors in a finely machined liner, completely minimizing axial thrust strains on the bearings. The L3ME-090/152 is designed for smooth, pulse-free, low-shear fluid transfer and is suited for the transfer of non-abrasive fluids through a variety of pressure profiles. Examples of such fluids include heavy fuel oil (HFO), marine diesel oil (MDO), marine gas oil (MGO) and high viscosity lubricating oils.

Model Details

• Brand: Leistritz
• Model Code: L3ME-090/152 IFOGOO-W
• Series: L3 Series (Medium-Pressure Positive Displacement)

Technical Details: Leistritz L3ME-090/152 IFOGOO-W

Main Features

1. Drop-In Cartridge Architecture: Operates as a fully integrated, pre-assembled pumping element that fits into existing housings without piping modifications, hence reducing maintenance schedules.
2. Volumetric Displacement Without Pulse The three-spindle design provides constant axial motion eliminating fluid shearing and pulsation protecting downstream instruments from pressure surges.
3. Nitrided Steel Spindles: High quality, surface hardened and grind steel shafts for extended life wear resistance against variable fuel sulphur content and low-lubricity fluids.
4. Hydraulically Balanced Rotors: The internal fluid pressure distributions eliminate axial forces, therefore eliminating the requirement for mechanical thrust bearings and minimizing power absorption.
5. Suction Chamber Sealing Mechanical seal is isolated in the low pressure zone of suction path minimizing the load on sealing faces and increasing MTBF (Mean Time Between Failures).

Applications

• Marine Main Engine Fuel Injection Support – Continuous fuel oil booster and circulation service for Heavy Fuel Oil (HFO) systems.
• Bulk Fuel Transfer & Forwarding: High volume transfer of Marine Gas Oil (MGO) and Marine Diesel Oil (MDO) between storage and settling tanks.
• ENGINE ROOM LUBRICATING OIL SYSTEMS Safe circulation and pressure feeding of lubricating oil to main propulsion machinery and auxiliary diesel generators.
• Industrial Oil Handling & Refinery Processing Crude Oil, Asphalt and High-Vicosity Process Fluids Handling in Mainland Refineries and Chemical Plants
• High-Capacity Hydraulic Systems: Fluid supply for big industrial hydraulic power packs and low pressure deck machinery systems.

Equipment Compatibility

• This cartridge acts as a direct replacement element for full pump assemblies built around the 090/152 size framework.
• Compatible Pump Housings: Leistritz L3ME-090/152 series casings.
• Interchangeable Variants: Leistritz L3ME-90/152 IF0G0-W-S, L3MA-090/152 configurations, and related modular L3-series medium-pressure units.

Marine Engineer’s Installation Checklist

• Liner Alignment Check: Before introducing the new cartridge into the pump housing, ensure the internal bore of the casing is completely clear of varnish, polymerized fuel deposits, or old O-ring fragments. A minor surface scoring inside the housing can prevent the cartridge from seating squarely, leading to internal component stress.
• Seal Cavity Venting: Upon complete assembly and prior to the initial start-up, manually prime the pump casing through the top plug. Ensure the mechanical seal chamber is completely flooded. Running a three-screw pump dry for even 10 seconds will score the nitrided rotor faces and overheat the sealing elastomer.
• Cold-Start Viscosity Management: When operating this pump with heavy oils (such as HFO), always verify that the fluid temperature matches the target system viscosity (minimum 10 cSt to avoid excessive motor torque and internal over-pressurization).

Frequently Asked Questions

What is the advantage of a Leistritz pump cartridge over a traditional pump rebuild?

A drop-in cartridge contains all critical tolerances (rotors, internal bearings, liner, and seals) pre-set by the factory. Replacing the cartridge restores the volumetric efficiency of the pump to factory specifications and eliminates the risk of field-alignment errors.

Can the L3ME-090/152 cartridge handle modern low-sulfur fuels (VLSFO / ULSFO)?

Yes. The nitrided, hardened steel rotors provide excellent surface hardness. However, ensure your operating temperature is regulated so that the fluid viscosity stays above 1.2 cSt to maintain the hydro-dynamic fluid film between the screws.

Does this cartridge include a mechanical seal?

Yes, this L3ME execution includes the complete internal mechanical seal pre-assembled within the suction-side housing of the element.

How do I identify if my pump casing accepts this specific element?

Check the nameplate on your external pump body. It must state Size 090 and Pitch 152 within the model string. If your current model code contains minor differences in the suffix (e.g., IF0G0-W-S), this cartridge remains fully compatible as a functional drop-in unit.