Efficient Three-Screw Pump – Cast Iron Heavy Oil Marine Transfer

The SMH Series Three-Screw Pump is an industrial-grade fluid handling solution engineered for high-efficiency transfer of heavy oils, lubricants, and viscous chemical media. Built for demanding applications across power plants, oil refineries, and marine vessels, this positive displacement pump provides continuous, pulsation-free flow under high-pressure conditions. Its exceptional reliability and leak-free performance directly translate to lowered maintenance costs and uninterrupted system uptime for global industrial operations.

Crafted with a heavy-duty cast iron housing and precision-ground triple screw rotors, the pump delivers excellent volumetric efficiency and superior wear resistance. The unique external bearing design isolates the mechanical components from the pumped medium, allowing it to safely handle a wide viscosity range from 1 to 5000 mm²/s and temperatures reaching up to 250°C. For enhanced operational safety, it features multiple specialized sealing options and an integrated safety valve assembly that effectively mitigates overpressure risks. Marine operators will highly appreciate its versatility, as the pump supports horizontal, vertical, and flange-mounted configurations to fit seamlessly into cramped engine rooms or complex industrial layouts. With stable pressure and minimal vibration, it ensures a highly consistent and dependable user experience across long operating cycles. This low-noise, self-priming electric pump has earned prestigious classification society certifications, making it the trusted choice for critical marine fuel injection, industrial lubrication, and bulk fluid loading lines.

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Key Features 

• PRECISION-GROUND ROTORS: Features finely ground triple screw components that provide stable, pulsation-free flow with outstanding operational efficiency.

• EXTERNAL BEARING DESIGN: The uniquely isolated external bearings accommodate a wide range of media and viscosities while preventing contamination.

• LEAK-FREE PERFORMANCE: Equipped with highly reliable mechanical seal options tailored to specific conditions to ensure zero fluid leakage.

• INTEGRATED SAFETY VALVE: Includes an optional built-in safety relief valve to guarantee maximum operational security and protect pipelines from overpressure.

• FLEXIBLE INSTALLATION: Supports horizontal foot-mounted, vertical pedestal, or flange-mounted setups for effortless installation in varied industrial configurations.

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Applications

• Marine & Shipbuilding: Used on vessels as a reliable heavy oil transfer pump, marine booster pump, fuel injection pump, and lube oil pump.

• Power Plants & Heating Lines: Serves as a heavy oil fuel supply and boiler feeding pump, boosting efficiency and ensuring continuous power generation.

• Chemical & Petrochemical Processing: Ideal for the high-pressure loading, unloading, and transferring of high-viscosity synthetic rubber, emulsions, and crude mixtures.

• Mechanical Industry Hydraulics: Acts as a core hydraulic and lubrication fluid mover for heavy machinery and remote control systems.

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Specifications

Feature / Parameter	Specification Details (Flagship Model: SMH120R46U12.1W27)
Product Category	Three-Screw Pump (Positive Displacement)
Housing & Rotor Material	High-Grade Cast Iron Housing / Alloy Screws
Drive Mechanism	Electric Motor Drive
Operating Voltage	380V (Three-Phase)
Rated Power Output	1.32 kW
Rated Flow Rate	2.8 m³/h (Series range up to 132 m³/h)
Maximum Delivery Lift / Head	100 m (Pressure range up to 10 MPa)
Inlet / Outlet Size	32 mm / 25 mm
Rotational Speed	950 r/min (Series range up to 2900 r/min)
Viscosity Sizing Range	1 – 5000 mm²/s
Max Allowable Temperature	Up to 250°C
Net Weight	86 kg

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Extra Sections

Functions

• Delivers continuous positive displacement pressure to lift, transfer, and boost heavy viscous fluids without generating internal fluid shear or flow pulsation.

Advantages

• Strong Self-Priming: High vacuum suction capabilities enable immediate operation without external priming lines.

• Low Noise & Vibration: Balanced internal rotor hydraulics ensure incredibly smooth execution and low noise levels.

Certifications

• Fully approved and certified by major global maritime classification societies for critical shipboard duty.