Internal gear pumps are widely used, with an effective working viscosity range of 1 cP to 1,000,000 cP. They are usually used for thin liquids, such as water, solvents, and fuel oil, but they are good at pumping thick liquids, such as asphalt, chocolate, and adhesives. Internal gear pumps also have a wide operating temperature range (up to 400°C), making them suitable for pumping difficult fluids such as tar and molten sulfur.

Some typical applications of internal gear pumps are:

Fuel and lubricants

Resins and polymers

Alcohol and solvents

Asphalt, bitumen and tar

Polyurethane foam (isocyanate and polyol)

Foods such as corn syrup, chocolate and peanut butter

Paints, inks and pigments

Soap and surfactant

Ethylene glycol


Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional hydraulic pump manufacturer and hydraulic pump supplier in China that produces Internal Gear Pumps and Vp Series Variable Displacement Vane Pumps . Our internal gear pump products have the advantages of high working pressure, high volumetric efficiency, low pressure pulsation, etc. Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations , Automatic production line, etc. Welcome to consult and order: https://www.china-vanepump.com/product/internal-gear-pumps/